题目内容
—Could you please have a walk with me?
—Sorry, I _______. I have something important to do now.
A. mustn’t B. needn’t
C. can’t D. may not
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题目内容
—Could you please have a walk with me?
—Sorry, I _______. I have something important to do now.
A. mustn’t B. needn’t
C. can’t D. may not