Duringtheentrance（升学）exams,thereare

发布时间：2020-07-26 11:33:15

During the entrance（升学）exams, there are ________ parents waiting for their children outside their test center.A.thousand ofB.thousands ofC.thousandD.thousands

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B解析thousand前用具体数量，没有确切数量用thousands of，表“上千的”。
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