—We _____ talk loudly when we see the sign “Be quiet” on the wall.
—Yes, you are right. We should be polite in public.
| A．must | B．mustn’t |
| C．need | D．needn’t |
We __________ obey the traffic rules.
| A．must | B．have to | C．may | D．can |
You should ________ the flowers once a week.
| A．to water | B．water | C．watered | D．waters |
---I think Miss Gao must be in the library. She said she would go there.
---No, she _____ be there. I have just been there..
| A．can’t | B．mustn’t |
| C．needn’t | D．wouldn’t |
----Who’s the woman in red ? Is it Mrs. White?
----It be her. She went to Beijing yesterday.
| A．mustn’t | B．can’t |
| C．shouldn’t | D．needn’t |
一Are you going to Guilin by plane?
一It’s fast but expensive, so I’m not sure．I ________ take a train．
| A．should | B．may | C．must | D．will |
---What do you think of the film? ---Wonderful! You_______ praise it_______ much
| A．cannot; too | B．can; too |
| C．can always; so | D．can never; so |
—_______ I know by what time you want the report to be done?
—By the day after tomorrow. ______ you finish it on time?
| A．May; Can | B．Must; Need |
| C．Could; Must | D．Need; Would |
–Whose is this purple scarf?
–It _______ be Mary’s. She always wears a purple scarf like this.
| A．must | B．can |
| C．mustn’t | D．can't |
--Must we stay here waiting for you?
--No, you ______.
A.needn't B.can't C.shouldn't
Can you paint?________.
| A．Yes， I am. | B．Yes， I do . |
| C．No， I can. | D．Yes， a little. |
______play computer game s after school.
| A．Can’t | B．No | C．Not | D．Don’t |
—We _______ keep quiet in the library.
—Yes, I agree with you. And we _________ bring our student cards every time.
| A．must； mustn’t | B．have to； mustn’t |
| C．must； don’t have to | D．have to； don’t have to |
The computer still works well, we _____ buy a new one at the moment.
| A．have to | B．must |
| C．don’t have to | D．don’t need |
—Someone is singing next door. Is it Amy?
—It ______ be her. She is giving a performance at the theatre now.
| A．can’t | B．mustn’t | C．needn’t | D．won’t |
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