Healthy Lifestyles

Respuesta correcta: A) should

• A) shouldCorrect. Standard modal for giving advice.
• B) mightToo weak for general advice.
• C) would'Would' belongs to the second conditional for a hypothetical case, and this sentence states practical diet advice rather than an imagined situation.
• D) had betterPossible, but B is the standard neutral choice.

Respuesta correcta: D) ought

• A) shouldIncorrect syntax ('should to' is wrong).
• B) had betterDoes not take 'to'.
• C) mustToo strong, and doesn't take 'to'.
• D) oughtCorrect. 'Ought to' is a synonym for 'should' and requires 'to'.

Respuesta correcta: B) had better

• A) should toA modal is followed either by a bare infinitive or by 'to' plus a verb, so 'should to' combines two patterns that cannot meet.
• B) had betterCorrect. Used to give strong advice or a warning.
• C) would ratherIncorrect meaning (preference).
• D) oughtMissing 'to'.

Respuesta correcta: A) should

• A) shouldCorrect. Common in suggestions.
• B) mustToo strong for a suggestion.
• C) had betterToo informal/urgent for an expert summary.
• D) will'Will' states a certain future prediction, but an expert report that only 'suggests' is recommending rather than announcing.

Respuesta correcta: A) ought

• A) oughtCorrect. 'Ought not to' is the negative form.
• B) shouldIncorrect syntax ('should not to' is wrong).
• C) had betterIncorrect syntax ('had better not to' is wrong).
• D) mightToo weak.

Respuesta correcta: A) had better

• A) had betterCorrect strong advice.
• B) would'Would' belongs to the second conditional for a hypothetical situation and does not state the firm advice this sentence needs.
• C) should to'Should' cannot be followed directly by 'to'; a modal is either followed by a bare infinitive or by 'to' plus a noun.
• D) ought'Ought' has to be used with 'to', as in 'ought to avoid', so the bare form is incomplete.

Respuesta correcta: A) shouldn't have eaten

• A) shouldn't have eatenCorrect. 'Shouldn't have' + past participle for past regret/advice.
• B) shouldn't eatThis is for present/future.
• C) ought not eat'Ought' needs 'to' before the infinitive, and even 'ought not to eat' would be about the present, not about what happened last night.
• D) didn't have to eat'Didn't have to' means there was no obligation, which is not what the speaker is criticising; the eating certainly happened.

Respuesta correcta: A) ought

• A) oughtCorrect formal advice structure.
• B) shouldThis modal is followed directly by 'to' and the infinitive, so 'should to drink' doubles the marker. 'Should drink' would be right, but the sentence already supplies the 'to'.
• C) must'Must' can only mean obligation here, and it leaves no room for the 'though needs vary' clause that qualifies the claim.
• D) had better'Had better' takes the bare infinitive and adds urgency, which clashes with 'it is often said', a distant and impersonal report.

Respuesta correcta: B) might as well

• A) had betterToo strong for a gentle suggestion.
• B) might as wellCorrect. Used to suggest something because there is no reason not to, or as a secondary option.
• C) oughtMissing 'to'.
• D) would rather'Would rather' expresses a preference for one option over another, as in 'I would rather walk', and it needs a second alternative to compare against.

Respuesta correcta: C) had better / could be

• A) should / must be'Should not' is possible but A is stronger. 'Must be' is too certain.
• B) ought / might beMissing 'to'.
• C) had better / could beCorrect strong advice + possibility.
• D) would / can be'Would not' is the second conditional and 'can be' states general possibility, so neither half carries the strong warning about a specific set of symptoms.

Respuesta correcta: B) should have done

• A) should do'Should do' can only point forward, but the sentence criticises what the government failed to do years ago.
• B) should have doneCorrect. Criticism of a past lack of action.
• C) ought to do'Ought to do' has the same problem: it describes what should happen, not what should have happened at a past moment.
• D) had better do'Had better' gives advice for the present, and it does not take a past reference the way 'should have done' does.

Respuesta correcta: C) be / making

• A) was / to make'Was' would point at a past recommendation, and 'to make' is a to-infinitive where the sentence needs a gerund after the preposition.
• B) is / makeAfter 'it is strongly recommended that', English requires the subjunctive 'be', not the indicative 'is'.
• C) be / makingCorrect. Subjunctive 'be' + gerund after preposition.
• D) should be / made'Should be' would add a modal to a structure that already carries the verb of recommendation, and 'made' is a past participle where a gerund belongs.