—Must I clean the blackboard now? —No, you _______ clean it later.A．mustB．nee
题型：不详难度：来源：
—Must I clean the blackboard now? —No, you _______ clean it later.| A．must | B．needn’t | C．can | D．shouldn’t |
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答案
| B |
解析
| 对于must 引导的一般疑问句，否定回答，用needn’t。故选B |
举一反三
| I hear you’ve got some new Australian coins._______ I have a look? |
--- _______ I come back before 6 o’clock?
---No，you _______．But you _______ be back later than 7 o’clock．| A．Need；must；must | B．May；mustn’t；can’t | | C．Can；can’t：can’t | D．Must；needn’t；can’t |
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---Where’s Lucy?
---I’m not sure. She ________ in the school library. | A．maybe | B．must be | C．may be | D．will be |
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The man ______ be my father. My father is much taller.| A．can | B．must | C．can"t | D．mustn"t |
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If the green light doesn’t come on, you ______ go across the street.| A．must | B．needn’t | C．mustn’t | D．have to |
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