May I go now?- No. You let the teacher know first.”A. need B. must C. canD. may

发布时间：2020-08-22 00:33:30

--- May I go now?
--- No. You      let the teacher know first.”
A. need
B. must
C. can
D. may

网友回答

A. need
(答案→)B. must
C. can
D. may
解析：根据上文的问句内容，可知需要用情态动词，must，故选答案为B
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