摘要: - Is there a backpack under the bed? - No. . A. it is B. it isn’t C. there is D. there isn’t 答案:D there be+名词+地点/时间.表示在某地/某时有--.本句是它的一般疑问句形式.肯.定回答时.用Yes.there is,否定回答用No.there isn’t.

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