🇨🇴 ICFES SaberSemana 6 · 12 preguntas

Work And Careers

Bundle W06 de Inglés para Grado 9 en Colombia (DBA MEN Colombia): 12 preguntas con explicación pedagógica.

Alineación: DBA MEN Colombia

CO-ING-9-2026-W06-work-and-careers-001-MASTERY-bundle

Pregunta 1

Bloom: Remember

Guessing someone's job based on their clothes.

He is wearing a white coat and a stethoscope. He ________ be a doctor.

Elige una opción para comprobar tu respuesta.

Ver respuesta

Respuesta correcta: A) must

  • A) mustCorrect! "Must" is used when we are almost certain that something is true based on evidence.
  • B) mightIncorrect. "Might" is for possibility, but here the evidence is very strong.
  • C) can'tIncorrect. "Can't" is used when we are sure something is impossible.
  • D) shouldn'tIncorrect. "Shouldn't" is for advice or expectation, not deduction.

💡 Explicación

Usamos el modal must para hacer deducciones cuando estamos casi seguros de que algo es cierto basándonos en una evidencia clara (como el uniforme).

Pregunta 2

Bloom: Remember

Considering different career options.

"What is Sofia going to study?"
"I'm not sure. She ________ choose engineering, but she also likes arts."

Elige una opción para comprobar tu respuesta.

Ver respuesta

Respuesta correcta: B) might

  • A) mustIncorrect. There is no certainty here.
  • B) mightCorrect! "Might" is used to express a possibility when we are not sure.
  • C) can'tIncorrect. This would mean it's impossible for her to choose engineering.
  • D) has toIncorrect. This expresses obligation, not deduction or possibility.

💡 Explicación

El modal might (al igual que may o could) se utiliza para indicar que algo es posible, pero no estamos seguros de ello.

Pregunta 3

Bloom: Understand

Making a negative deduction based on facts.

They ________ be at work already. It's only 5:00 AM and the office opens at 8:00 AM.

Elige una opción para comprobar tu respuesta.

Ver respuesta

Respuesta correcta: B) can't

  • A) mustn'tIncorrect. "Mustn't" is for prohibition, not deduction.
  • B) can'tCorrect! "Can't" is the opposite of "must" for deductions; it means we are sure something is impossible.
  • C) might notIncorrect. This means it's possible they aren't there, but the evidence makes it almost certain they aren't.
  • D) shouldn'tIncorrect. Not an expectation or advice.

💡 Explicación

Usamos can't para deducciones negativas cuando estamos seguros de que algo no es posible basándonos en la lógica o los hechos.

Pregunta 4

Bloom: Understand

Deducing why someone didn't answer a call at work.

"I called Carlos ten times yesterday, but he didn't answer."
"He ________ been in a very important meeting."

Elige una opción para comprobar tu respuesta.

Ver respuesta

Respuesta correcta: B) must have

  • A) mustIncorrect. This is for present deduction.
  • B) must haveCorrect! "Must have + past participle" is used for deductions about the past.
  • C) can't haveIncorrect. This would mean it was impossible he was in a meeting.
  • D) should haveIncorrect. This is for past regrets or unfulfilled expectations.

💡 Explicación

Para hacer deducciones lógicas sobre eventos del pasado, utilizamos la estructura modal + have + participio pasado. Must have indica una fuerte probabilidad en el pasado.

Pregunta 5

Bloom: Apply

Evaluating a candidate after an interview.

The candidate spoke three languages and had a master's degree. She ________ been the most qualified person for the position.

Elige una opción para comprobar tu respuesta.

Ver respuesta

Respuesta correcta: A) must have

  • A) must haveCorrect! The evidence strongly suggests she was the best candidate.
  • B) might haveIncorrect. Stronger evidence calls for "must have".
  • C) could beIncorrect. This is for present possibility.
  • D) can't haveIncorrect. Contradicts the evidence.

💡 Explicación

Al evaluar una situación pasada con evidencias sólidas, must have es la forma gramatical que expresa nuestra conclusión lógica.

Pregunta 6

Bloom: Apply

Speculating about why a business failed.

The local bakery closed down last month. They ________ lost too many customers to the new supermarket.

Elige una opción para comprobar tu respuesta.

Ver respuesta

Respuesta correcta: C) could have

  • A) mustIncorrect. Refers to the present.
  • B) can't haveIncorrect. This would mean it's impossible they lost customers.
  • C) could haveCorrect! This suggests a possible reason for the past event.
  • D) would haveIncorrect. This is for conditional sentences.

💡 Explicación

Could have se utiliza para mencionar una posibilidad en el pasado, una de las varias razones por las cuales algo pudo haber sucedido.

Pregunta 7

Bloom: Analyze

Distinguishing between lack of certainty and impossibility.

"Is the boss in her office?"
"The lights are off and her car isn't in the parking lot. She ________ be there."

Elige una opción para comprobar tu respuesta.

Ver respuesta

Respuesta correcta: B) can't

  • A) might notIncorrect. The evidence is strong enough for a more certain deduction.
  • B) can'tCorrect! Strong evidence suggests it's impossible she is there.
  • C) mustn'tIncorrect. "Mustn't" is not for deduction.
  • D) couldn't haveIncorrect. This is for the past.

💡 Explicación

Cuando la evidencia física (luces apagadas, ausencia del coche) apunta claramente a una conclusión negativa, can't es la opción más precisa.

Pregunta 8

Bloom: Analyze

Understanding the difference between "must have" and "should have".

"The project was a disaster. You ________ followed the instructions."

Elige una opción para comprobar tu respuesta.

Ver respuesta

Respuesta correcta: B) can't have

  • A) must haveIncorrect. This would mean you definitely followed them, which contradicts the "disaster" part.
  • B) can't haveCorrect! Logical deduction: if it was a disaster, you clearly didn't follow them.
  • C) should haveIncorrect. While you should have followed them, the context asks for a deduction about what happened.
  • D) might haveIncorrect. Not certain enough.

💡 Explicación

Can't have se usa para deducir que algo no ocurrió en el pasado basándonos en los resultados presentes (el desastre del proyecto).

Pregunta 9

Bloom: Analyze

Speculating about a colleague's promotion.

Lina got the promotion instead of Peter. Peter ________ very disappointed when he heard the news.

Elige una opción para comprobar tu respuesta.

Ver respuesta

Respuesta correcta: B) must have been

  • A) must beIncorrect. This refers to his state right now, but the context is the moment he heard the news.
  • B) must have beenCorrect! Deduction about his emotional state at a past moment.
  • C) might beIncorrect. Present possibility.
  • D) can't have beenIncorrect. It's very likely he was disappointed.

💡 Explicación

Para deducir cómo se sintió alguien en un momento específico del pasado, usamos must have been.

Pregunta 10

Bloom: Evaluate

Finding an error in a workplace rumor.

Identify the error in this dialogue:
A: "I saw a moving truck at the manager's house."
B: "He must (A) be quitting his job. Or maybe he can't (B) have found a better house. He might have (C) decided to move closer to the office. We must to (D) wait and see."

Elige una opción para comprobar tu respuesta.

Ver respuesta

Respuesta correcta: D) must to

  • A) mustIncorrect. Correct use for a present deduction.
  • B) can'tIncorrect. This is a possible deduction.
  • C) might haveIncorrect. Correct use for a past possibility.
  • D) must toCorrect! Modal verbs like "must" are followed by the infinitive without "to".

💡 Explicación

Los verbos modales (must, can, might, etc.) nunca llevan la partícula to antes del verbo principal que los acompaña.

Pregunta 11

Bloom: Evaluate

Judging the certainty of various statements.

Which of these statements expresses the highest level of certainty that something did not happen?

Elige una opción para comprobar tu respuesta.

Ver respuesta

Respuesta correcta: C) She can't have seen the job offer.

  • A) She might not have seen the job offer.Incorrect. This is just a possibility.
  • B) She shouldn't have seen the job offer.Incorrect. This is about what was desirable.
  • C) She can't have seen the job offer.Correct! This means the speaker is certain she didn't see it.
  • D) She couldn't have seen the job offer.Incorrect. Similar to C, but "can't have" is the standard for strong negative deduction.

💡 Explicación

En el nivel B2, se debe distinguir la fuerza de los modales. Can't have es la forma más fuerte para negar la posibilidad de un evento pasado basándose en la lógica.

Pregunta 12

Bloom: Evaluate

Choosing the most logical deduction for a career change.

"After ten years as a successful lawyer, Julian decided to become a professional chef."
"Wow! He ________ his old job, or he ________ discovered a new passion."

Elige una opción para comprobar tu respuesta.

Ver respuesta

Respuesta correcta: C) must have hated / must have

  • A) must hate / mightIncorrect. Tenses don't match the past change.
  • B) can't have liked / should haveIncorrect. "Should have" is for advice.
  • C) must have hated / must haveCorrect! Both are strong deductions based on his radical career change.
  • D) might have hated / can't haveIncorrect. The second part doesn't make sense logically.

💡 Explicación

Para explicar un cambio de vida tan radical ocurrido en el pasado, solemos usar deducciones fuertes (must have) para ambas partes de la suposición.

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