20．---__________I finish the writing now？
---No，you needn't．You __________give it to me next Monday．（　�。�
A．Most； mustn'tB．Must； mayC．May；may notD．Need；can't

分析 --今天我必須完成寫作嗎？
--不，你不必．你可以下個(gè)星期一把它給我．

解答 答案：B．根據(jù)No，you needn't．可知為否定回答，must的含義是必須一定，其否定形式mustn't表示禁止的含義．在這里不是禁止的意思．must的否定回答一般可借助于needn'和don't have to來構(gòu)成，所以問句應(yīng)該用must來引導(dǎo)；再根據(jù)You __________give it to me next Monday，可知這里的意思是你可以下個(gè)星期一把它給我，所以這里用may表示可能性．故選B

點(diǎn)評(píng) 本題考查了情態(tài)動(dòng)詞的用法．注意must的用法以及它的肯否定形式．

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