Question

【题目】—Shall I get one more cake for you, Dad? —Thanks, but you___, I've had enough.

A. may not B. must not C. can't D. needn't

Answer 1

【答案】D

【解析】句意：-爸爸，我再给你拿一块蛋糕好吗？--谢谢，不必了，我已经饱了。A. may not也许不； B. must not 不可以，禁止； C. can't不会；表推测时“不可能”； D. needn't不必。根据I've had enough可知，已经饱了，没有必要再要蛋糕了。故选D。