—What sort of house do you want to have? Must it be big? —Well, it ______ be big. That’s not important.

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问题 —What sort of house do you want to have? Must it be big? —Well, it ______ be big. That’s not important.

选项 A、mustn’t
B、needn’t
C、can’t
D、won’t

答案B

解析 由must引起的疑问句,肯定回答是must或have to;否定回答则用needn’t或don’t haveto,意为“不必”。答案为B。
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