Past tense exercise - Answer Key

Check the answers to the exercise until you have finished it!

Change the sentences to past form, use the word in parentheses.

1. Volcano eruptions burn the ecosystems around it. (last year)

Volcano eruptions burned the ecosystems around it last year.

2. The teacher asks questions for participation. (last Friday)

The teacher asked questions for participation last Friday.

3. Does your sister study her lessons every afternoon? (last night)

Did your sister study her lessons last night?

4. Do you call your friends on the phone? (yesterday)

Did you call your friends on the phone yesterday?

5. Victor chews gum in English class. (yesterday)

Victor chewed gum in English class yesterday.

6. The children close the windows after class. (last week)

The children closed the windows after class last week.

7. Your friends don’t compete for the best song. (last month)

Your friends didn’t compete for the best song last month.

8. The girl doesn’t cook dinner every night. (last night)

The girl didn’t cook dinner last night.

9. We don’t  check our exams. (yesterday)

We didn’t check our exams yesterday.

10.  The parasites damage the hosts they live on. (in the experiment)

The parasites damaged the hosts they lived on in the experiment.