—Mike’s parents have bought a 2-floor house with a swimming pool.— Oh, it________ be very expensive.

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• —Must I finish the work today, Mom?—No, you . You can finish it tomorrow .A. mustn’t B. can’t C. nee
• 要剪贴一张生态系统模式图，不可缺少的生物是（）A．太阳B．动物C．植物D．空气-生物
• 用am,is,are填空。1．What ________ your name?2．My name ________ Tom. 3．I ________ John Brown. 4．Her name _
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• --______ we clean the classroom at once? --No, you _____. You____ clean it after school.A．Must, need
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• Eddie _______ my good friend. He _______ ill three days ago. [ ]A. is; was B. be; is C. was; ill D.
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