If it was not an accident, he must have done it .
| A．on purpose | B．in common | C．on occasion | D．in time |
--- Shall I get one more cake fro you, David?
--- Thanks, but you ______. I’ve had enough.
| A．shouldn’t | B．mustn’t | C．can’t | D．needn’t |
Thank you very much. Without your help we ______ car started.
| A．didn’t get | B．hadn’t got | C．couldn’t get | D．couldn’t have got |
--- Any news about the fire?
--- Nearly 20 people ______ from the burning building by now.
| A．rescued | B．have been rescued | C．have rescued | D．were rescued |
--- May I visit you at 10 o’clock tomorrow morning?
--- I’m afraid I ______ a document for my boss then. What about 12:00?
| A．am preparing | B．will have prepared |
| C．will be preparing | D．have been preparing |
The meeting ______ next Thursday mainly aims to deal with the problems related to teenagers’ mental health.
| A．held | B．to hold | C．being held | D．to be held |