I. Fill in the spaces in the following sentences with one auxiliary + perfect infinitive
( must, can’t, might, may, need, should….. + have PII)
1. Did you hear me come in last night. – No, I (sleep) ................... ...................
2. You (help) ................... ................... him. (You helped him but he didn’t need
help).
3. I wonder who broke the wineglass; it (be) ................... ................... the cat for she
was out all day.
4. He is back already. – He (start) ................... ................... very early.
5. I told him to turn left and he immediately turned right. – He (understand)
................... you.
6. The door was open.
- It (be) ................... ................... open. I had locked it myself and the key was in
my pocket.
7. I’ve opened another bottle.
- You (do) ................... ................... that. We've just only started this one.
8. I saw Ann in the library yesterday. You (see) ................... ................... her; she’s
still abroad.
9. I’ve made two copies. You (make) ................... ................... two. One would have
been enough.
10. I had to get down the mountain in a thick fog. – That (be) ...................
................... difficult.
11. We’ve sent for a doctor. – You (send) ................... ................... for him. I’m
perfectly well.
12. He (walk) ................... ................... from here to London in two hours. It isn’t
possible.
13. I had my umbrella when I came out but I haven’t got now. – You (leave)
................... ................... on the bus.
14. Why didn’t you wait for me yesterday? – I waited five minutes. – You (wait)
................... ................... a little longer.
15. Perhaps he swam across. – No, he (do) ................... ................... that; he can’t
swim.
16. We went to a restaurant and had a very good dinner for $3.
- You (have) ................... ................... a very good dinner if you only paid $3.
17. That carpet was entirely made by hand. – It (take) ................... ................... a long
time.
18. The machine said “you weigh 63 kg,” and I said “Thank you.”
- You (say) ................... ................... anything.
19. I have just watered the roses.
– You (water) ................... ................... them. Look, it’s raining now.
20. A: I have finished.
B: But you were only half way through when I went to bed. You (work)
................... ................... all night.
21. A: I’ve written to Paul.
B: You (write) ................... ................... to him. He’s coming here tomorrow.
You’ll see him before he gets your letter.
22. I left my bicycle here, and now it’s gone. – Someone (borrow) ...................
................... it.
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