Reported speech QMBT

The professor said, “This bacteria grows fast.”

• a) The professor said (that) the bacteria grew fast.

• b) The professor said the bacteria grows fast.

• c) The professor told bacteria grew fast.

• d) The professor told me grew fast.

Answer explanation

Justificación: Cambio de presente (grows) a pasado (grew) en discurso indirecto.

2. The researcher asked, “Did you analyze the DNA sample?”

• a) The researcher asked if I analyze the DNA sample.

• b) The researcher asked if I had analyzed the DNA sample.

• c) The researcher said I had analyzed the DNA.

• d) The researcher told me analyze the DNA sample.

Answer explanation

Justificación: Pasado simple (“did you analyze”) cambia a pasado perfecto (“had analyzed”).

3. The teacher told us, “Wear gloves in the lab.”

• a) The teacher told us wear gloves in the lab.

• b) The teacher said us to wear gloves in the lab.

• c) The teacher told us to wear gloves in the lab.

• d) The teacher said wear gloves in the lab.

Answer explanation

✔️ Justificación: Imperativo → told + object + to + verb.

4. The scientist said, “We are testing a new vaccine.”

• a) The scientist said (that) they were testing a new vaccine.

• b) The scientist said they are testing a new vaccine.

• c) The scientist told were testing a vaccine.

• d) The scientist said me they were testing a vaccine.

Answer explanation

✔️ Justificación: “Are testing” → “were testing” en estilo indirecto.

5. The researcher asked me, “Where do you store the microorganisms?”

• a) The researcher asked me where I store the microorganisms.

• b) The researcher asked me where I stored the microorganisms.

• c) The researcher told me where I stored the microorganisms.

• d) The researcher said me where I stored microorganisms.