You _______ her in her office last Friday; she’s been out of town for two weeks.
| A．needn’t have seen | B．must have seen | C．shouldn’t have seen | D．can’t have seen |
a diary every day and you’ll improve your writing．
| A．Keeping | B．To keep | C．Keep | D．If you keep |
_____ in the queue for half an hour,Tom suddenly realized that he had left his wallet at home.
| A．To wait | B．Have waited | C．Having waited | D．To have waited |
The library needs _____,but it’ll have to wait until Friday.
| A．cleaning | B．to clean | C．being cleaned | D．to being cleaned |
-- Catherine, I have cleaned the room for you.
---Thanks. You _______ it. I could manage it myself.
| A．needn’t do | B．shouldn’t have done | C．mustn’t do | D．needn’t have done |
It didn’t take the children long to________ the correct answer.
| A．carry out | B．figure out | C．turn out | D．give out |