题目内容
1．-May I watch TV for a while？-No，you __________．You have to finish your homework first．（ ）
| A． | shouldn't | B． | needn't | C． | mustn't | D． | won't |
分析 --我可以看一会电视吗？
--不，您不可以．你必须先完成你的作业．
解答 答案：C．mustn't不可以；needn't不必；shouldn't不应该；won't将不会．根据No，you __________．You have to finish your homework first，可知这里的意思是不可以看电视，必须先做作业，语气比较强烈，mustn't不可以．故选C．
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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