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

—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 have to．意为“不必”。答案为B。
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