题目内容
You buy a gift, but you can if you want to.
| A．must | B．mustn't | C．have to | D．don't have to |
D
解析试题分析：don’t have to 没有必要做某事儿，mustn’t 则为禁止。句意：你没有必要买礼物，但是如果你想的话，你可以买。must 必须, mustn’t表禁止 have to 不得不。
考点：考查情态动词
--- I had thought he would be nervous in this speech competition, but he turned out to be calm.
--- He quite enough preparation for it.
| A．should do | B．must do |
| C．should have done | D．must have done |
— You must be looking forward to your trip to Sydney.
— Yes. I wait any longer.
| A．can't | B．mustn't | C．needn't | D．shouldn't |
— I phoned you yesterday morning. A girl answered, but I didn’t recognize the voice.
— Oh, it __________ my younger sister. She was in my room at that moment.
| A．must have been | B．should have been |
| C．could have been | D．may have been |
It has been announced that all the students ____ put on masks before going to school in case they are infected with SARS virus.
| A．shall | B．will | C．need | D．may |
--- My son is _____ to be seen. Where has he gone?
--- I think he _____ in the building.
| A．nowhere; must be hiding | B．nowhere; must be hidden himself |
| C．anywhere; hides | D．everywhere; hides himself |
— Li Lin hasn’t turned up yet, but he promised to come to the party.
— He ______ home. He is a man of keeping his word.
| A．can’t leave | B．won’t be leaving |
| C．could have left | D．must have left |
It’s cold here. _________ I switch on the heating?
| A．Should | B．Will | C．Would | D．Shall |
One Friday, we were packing to leave for a weekend away ____ my daughter heard cries for help.
| A．after | B．while | C．since | D．when |