May have, Might have, Could have, Cant have Must have

May have, Might have, Could have, Cant have Must have

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
Complete the sentences with the following Modals:
can't have/ must have / might have / could have / may have + past participle


1. I'm not sure. She to the shops. (go)

2. She the house yet because her car is still outside. (leave)

3. She the house by now; it’s nearly 8:00 o'clock. She usually leaves home at 7:30 (leave)

4. I think he his exams already. (finish)

5. If I had known about the traffic problems, I a different route. (take)

6. He hard for his exams because his results were very good. (study)

7. They the instructions because they looked confused. (understand)

8. She home late last night because she was very tired this morning. (get)

9. I guess they to the wrong place. (go)

10. Sarah thinks she her purse on the bus. (leave)