--Listen! Kate is playing the piano in the next room. --It _______________be Ka
题型：不详难度：来源：
--Listen! Kate is playing the piano in the next room.
--It _______________be Kate. She has gone to Hangzhou to visit the Cross-sea Bridge.| A．needn’t | B．mustn’t | C．can’t | D．shalln’t |
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答案
| C |
解析
| can’t不能；mustn’t不可以；needn’t不必 ；shalln’t不会,根据上下文意思,此处不能是凯特,故选C. |
举一反三
—Dad, must I do my homework now?
—No. You_____play games with your friends for a little while. | A．would | B．needn’t | C．may | D．don’t have to |
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--- ______ you give your seat to this old man?
--- Of course. |
—Could you please come to the museum with me this afternoon?
—Sorry，I ________．I have to take a piano lesson at 2 pm．| A．couldn’t | B．mustn’t | C．can’t | D．needn’t |
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--- May we leave the classroom now?
--- No, you ____________ . You ____________ to leave before the bell rings.| A．mustn’t, are allowed | B．don’t have to, are allowed | | C．needn’t, aren’t allowed | D．can’t, aren’t allowed |
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We _______ talk loudly when we see the sign “ Be quiet ”on the right. | A．must | B．mustn’t | C．need | D．needn’t |
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