题目内容
7.-Another cup of tea?-No,thanks.I _______ be off.My mom is waiting for me at home.( )
| A. | can | B. | must | C. | may | D. | should |
分析 --再喝一杯茶吗?
--不,谢谢.我必须走了.我妈妈在家等着我.
解答 答案:B.
can能,能够;must一定,必须;may可以;should应该.根据My mom is waiting for me at home,可知我妈妈在家等着我,所以我必须走了.must一定,必须.故选B.
点评 本题考查了情态动词的用法.解答时注意理解句意以及所给选项的意思并作出正确选择.
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