题目内容
1.---Could you please sweep the floor,Tom?---Sorry,mum,I_________.I'm doing my homework.( )
| A. | can't | B. | mustn't | C. | needn't | D. | may not |
分析 --Tom,请你扫一下地好吗?
--对不起,妈妈,我不能.我正在做作业.
解答 答案:A.can't不能;mustn't不可以;needn't不必;may not可能不.根据I'm doing my homework,可知我在做作业,说明是拒绝了要求,否定回答为Sorry,I can't.故选A.
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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