Past Simple Regular Irregular

Respuesta correcta: A) They walked to the beach yesterday.

• A) They walked to the beach yesterday.Correct! 'Walked' is the past simple regular, with the suffix -ed on the stem after a consonant, and 'yesterday' fixes the action in the past.
• B) They walk to the beach yesterday.Incorrect! 'walk' is the bare present form, and 'yesterday' can never go with the present.
• C) They are walked to the beach yesterday.Incorrect! 'are walked' is not an English form, because the past simple is never built with the auxiliary 'are'.
• D) They walking to the beach yesterday.Incorrect! 'walking' is the participle of the progressive, which in the past would need 'were' in front of it.

Respuesta correcta: C) studied

• A) studyedIncorrect! 'Studied' needs one single d at the end, and 'studyed' writes two of them, which no rule allows.
• B) studyIncorrect! 'study' is the bare present form, and the marker 'all last week' asks for a past action.
• C) studiedCorrect! 'Studied' adds the suffix -ed to the stem, and 'all last week' fixes the time in the past.
• D) studysIncorrect! 'studys' is the present simple of a singular subject, but 'all last week' asks for the past.

Respuesta correcta: B) went

• A) goedIncorrect! 'goed' treats an irregular verb as a regular one, and the past of 'to go' is a completely different word.
• B) wentCorrect! 'went' is the irregular past simple of the verb 'to go', and it takes no suffix at all.
• C) goneIncorrect! 'gone' is the past participle, which needs 'have' and describes an action seen from the present.
• D) goingIncorrect! 'going' is the participle of the progressive, which in the past would need 'was' in front of it.

Respuesta correcta: D) didn't see

• A) didn't sawIncorrect! 'didn't saw' puts the past in twice, because the auxiliary 'did' already carries the whole tense.
• B) don't seeIncorrect! 'don't see' is a negative in the present, and 'yesterday' points at a finished past time.
• C) not sawIncorrect! 'not saw' has no auxiliary at all, and a negative in the past always needs 'did not'.
• D) didn't seeCorrect! The negative past simple is 'did not' plus the base form, which contracts to 'didn't see'.

Respuesta correcta: D) Did you finish the project last week?

• A) Do you finished the project last week?Incorrect! 'Do' builds questions in the present, while 'last week' asks for the past simple.
• B) Did you finished the project last week?Incorrect! After 'Did' the verb must stay in its base form, and 'finished' keeps a past ending it no longer needs.
• C) Was you finish the project last week?Incorrect! 'Was' only works with the verb 'to be', and the main verb of this sentence is the action verb 'to finish'.
• D) Did you finish the project last week?Correct! The auxiliary 'Did' opens the question and the main verb returns to the base form 'finish'.

Respuesta correcta: B) were

• A) wasIncorrect! 'was' is the singular past of the verb 'to be', and the subject of this sentence is the plural 'they'.
• B) wereCorrect! 'They' is plural, so the past simple of the verb 'to be' here is 'were'.
• C) areIncorrect! 'are' is the present of the verb 'to be', and 'last night' points at a finished past time.
• D) beIncorrect! 'be' is the bare infinitive, which carries no tense of its own.

Respuesta correcta: A) stopped

• A) stoppedCorrect! 'Stop' ends in one consonant after a short vowel, so the double p of the base verb carries over to 'stopped'.
• B) stopedIncorrect! 'stoped' does not double the p, and that double consonant is exactly what the spelling rule requires here.
• C) stoppesIncorrect! 'stoppes' is not a form of this verb, because the past simple takes only one suffix.
• D) stoptIncorrect! 'stopt' is not an English form, and no suffix is written after the p in this verb.

Respuesta correcta: C) wrote

• A) writedIncorrect! 'write' is irregular, and simply adding -ed to it produces a word English does not use.
• B) writtenIncorrect! 'written' is the past participle, which needs 'have' rather than a past simple form.
• C) wroteCorrect! 'wrote' is the irregular past simple of the verb 'to write', and it is a different word from the base form.
• D) writeIncorrect! 'write' is the bare present form, and 'last night' fixes the action in the past.

Respuesta correcta: C) didn't he

• A) doesn't heIncorrect! 'doesn't he' is the tag of a present simple clause, and the main verb here is in the past.
• B) wasn't heIncorrect! 'wasn't he' belongs to the verb 'to be', and the clause uses the action verb 'finished'.
• C) didn't heCorrect! A tag on a positive past simple clause takes the auxiliary 'did' in its negative form, which gives 'didn't he'.
• D) did he notIncorrect! 'did he not' is the full question form, and a tag is built from the contracted negative.

Respuesta correcta: A) ate

• A) ateCorrect! 'Ate' is the irregular past simple of the verb 'to eat', and it takes no suffix at all.
• B) eatedIncorrect! 'eated' adds a regular suffix to an irregular verb, which produces a word English does not use.
• C) eatenIncorrect! 'eaten' is the past participle, which needs 'have' rather than a past simple form.
• D) eatIncorrect! 'eat' is the bare present form, and 'before the concert' places the action in the past.

Respuesta correcta: D) had

• A) havedIncorrect! 'haved' adds a regular suffix to an irregular verb, and no English form works that way.
• B) haveedIncorrect! 'haveed' gives the verb two suffixes at once, and a verb never carries two endings.
• C) hadeIncorrect! 'hade' writes a single e where English writes 'had', and the past of this verb is irregular.
• D) hadCorrect! 'Had' is the irregular past simple of the verb 'to have', and it carries no suffix.

Respuesta correcta: B) wasn't

• A) weren'tIncorrect! 'weren't' is the plural negative of the verb 'to be', and the subject of this sentence is 'it'.
• B) wasn'tCorrect! 'It' is singular, so the negative past simple of the verb 'to be' here is 'wasn't'.
• C) didn'tIncorrect! 'didn't' negates an action verb, and the verb of this sentence is the one of 'to be'.
• D) isn'tIncorrect! 'isn't' is the negative of the verb 'to be' in the present, and 'yesterday afternoon' is past.

Respuesta correcta: B) carried

• A) cariedIncorrect! 'caried' drops the r before the suffix -ied, but the double r of the base verb must carry over.
• B) carriedCorrect! A consonant plus y takes the suffix -ied after doubling the consonant, which gives 'carried'.
• C) caryedIncorrect! 'caryed' keeps the y after the r, and a consonant plus y never takes the plain suffix -ed.
• D) carryedIncorrect! 'carryed' uses the suffix -ed, which English never attaches after a consonant plus y.

Respuesta correcta: D) decided

• A) deciddedIncorrect! 'Decidded' doubles a d that this verb never doubles, so the suffix is a plain -ed.
• B) deciedIncorrect! 'Decied' drops the d before the suffix -ied, but English always keeps it after a consonant.
• C) decideddIncorrect! 'decidedd' writes the suffix twice, and a verb never carries two endings.
• D) decidedCorrect! 'Decided' takes the plain suffix -ed after the vowel i, with no doubling and no change of the y.

Respuesta correcta: C) did

• A) doedIncorrect! 'doed' adds a regular suffix to an irregular verb, which produces a word English does not use.
• B) doneIncorrect! 'done' is the past participle, which needs 'have' rather than a past simple auxiliary.
• C) didCorrect! 'Did' is the irregular past simple of the verb 'to do', and it doubles as the auxiliary of the tense.
• D) doIncorrect! 'do' is the bare present form, and 'before dinner yesterday' fixes the action in the past.

Respuesta correcta: A) Yes, I did.

• A) Yes, I did.Correct! 'Yes, I did' repeats the auxiliary of the question and adds nothing else, which is the standard short answer.
• B) Yes, I was.Incorrect! 'Yes, I was' uses the wrong auxiliary, because the question was built with 'Did'.
• C) Yes, I called.Incorrect! 'Yes, I called' adds a new piece of information, and a short answer only agrees with the question.
• D) Yes, I do.Incorrect! 'Yes, I do' uses the auxiliary of the present, and 'Did' already carried the past tense.

Respuesta correcta: A) broke

• A) brokeCorrect! 'broke' is the irregular past simple of the verb 'to break', and it is written with an o.
• B) breakedIncorrect! 'breaked' adds a regular suffix to an irregular verb, and no English form works that way.
• C) brokenIncorrect! 'broken' is the past participle, which needs 'have' rather than a past simple form.
• D) breakIncorrect! 'break' is the bare present form, and the clause describes an action finished in the past.

Respuesta correcta: D) took

• A) takeedIncorrect! 'takeed' adds a regular suffix to an irregular verb, and no English form works that way.
• B) takenIncorrect! 'taken' is the past participle, which needs 'have' rather than a past simple auxiliary.
• C) takedIncorrect! 'taked' adds the suffix -ed, but the past of 'to take' is irregular and takes no suffix.
• D) tookCorrect! 'took' is the irregular past simple of the verb 'to take', a completely different word.

Respuesta correcta: B) She wasn't ready for the test.

• A) She didn't ready for the test.Incorrect! 'didn't ready' puts the auxiliary 'did' in front of an adjective, and no English clause allows that.
• B) She wasn't ready for the test.Correct! 'wasn't' is the negative past of the verb 'to be', and it is followed by the adjective 'ready'.
• C) She wasn't be ready for the test.Incorrect! After the auxiliary 'wasn't' the base form 'be' can never follow, so this is not an English form.
• D) She isn't ready for the test yesterday.Incorrect! 'isn't' is the negative of the verb 'to be' in the present, and 'yesterday' points at the past.

Respuesta correcta: C) She moved to Mayaguez two years ago.

• A) She moves to Mayaguez two years ago.Incorrect! 'moves' is the simple present of a singular subject, and 'two years ago' asks for the past.
• B) She is moving to Mayaguez two years ago.Incorrect! 'is moving' is the present continuous, which wants a marker such as 'right now' instead of a past one.
• C) She moved to Mayaguez two years ago.Correct! 'Moved' is the past simple regular, and 'two years ago' fixes the action in a finished past time.
• D) She moved to Mayaguez two years ago tomorrow.Incorrect! 'tomorrow' points at the future, and a clause about the past cannot end with it.