Tommy, you____ be hooked on the Internet all day. You may fall behind others in

题干

Tommy, you____ be hooked on the Internet all day. You may fall behind others in study.

A．mustn’t

B．shan’t

C．can’t

D．needn’t

上一题下一题 0.85难度单项选择更新时间:2012-05-24 12:22:09

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