11．--Must I go now？
--No，you     ．There's still a little time left．（　�。�
A．can'tB．needn'tC．mustn'tD．must

分析 --我現(xiàn)在必須走嗎？
--不，沒必要．還剩下一點(diǎn)時(shí)間．

解答 答案：B．
結(jié)合選項(xiàng)可知本題考查情態(tài)動詞，首先明確選項(xiàng)中每個(gè)單詞的意思：A：不能；B：沒必要；C：不可以；D：必須；根據(jù)答語中的No．可知為否定回答，意思是"不，沒必要"，以must開頭的一般疑問句，肯定回答還用must，而否定回答一般借助于needn't或don't have to，表示"沒必要"，故選B．

點(diǎn)評 本題考查了情態(tài)動詞的用法．解答時(shí)首先根據(jù)題干明確句意，理解所給選項(xiàng)中每個(gè)情態(tài)動詞的意思并熟練掌握它們的用法，便可作出正確選擇．

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