题目内容
-- May I go out now. Dad?
-- No. You __ let your mother know first.
-- No. You __ let your mother know first.
A.can | B.may | C.need | D.must |
D
考查情态动词词义。由答句中“不”,表示语气要求很坚决,应该是“必须”。
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A.can | B.may | C.need | D.must |