Could you send us your passport by ____________pos

Could you send us your passport by ____________post .A A.registeredB B.registeri

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There is a ________ of two hours with the 7:40 tra

There is a ________ of two hours with the 7:40 train.A A.delayB B.changeC C.sche

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计算机病毒是可以造成机器故障的

计算机病毒是可以造成机器故障的 A.一种计算机设备 B.一块计算机芯片 C.一种计算机部件 D.一种计算机程序

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—Why did you laugh just now —Ted wanted to tell u

—Why did you laugh just now —Ted wanted to tell us ___ very funny story, but he

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