题目内容

---- Can I watch TV now?
---- No, you ________. You _______ do your homework first.
A．can’t; can’tB．can’t; mustC．mustn’t; can’tD．needn’t; must
B
此题考查情态动词的基本用法。can’t不能； must必须，一定；mustn’t禁止；needn’t不必。句意：我现在能看电视了吗？——不，你不能。你必须首先做作业。故选B。
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