—Look! Someone ________ the floor.—Well, it wasn"t me. I went shopping just now.
题型：不详难度：来源：
—Look! Someone ________ the floor.
—Well, it wasn"t me. I went shopping just now.| A．had swept | B．has swept | | C．was sweeping | D．is sweeping |
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答案
| B |
解析
| B 考察动词时态。—看已经有人扫过地了。—嗯，不是我。我刚刚出去买东西。根据it wasn’t me可以推断扫地这一动作已经完成，并结合语境分析，该动作的结果对现在的情况有影响，故用现在完成时。 |
举一反三
—What"s the matter with Philips?
—Something must have happened to him. He left home three hours ago, but ________ at the party!| A．didn"t arrive | B．isn"t arriving | | C．hadn"t arrived | D．hasn"t arrived |
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Kate ________ on her new novel, which is supposed to come out next month.| A．was working | B．had worked | | C．will be working | D．has been working |
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Up to now, our society ________ with limited living space and a shortage of natural resources.| A．has been challenged | B．is being challenged | | C．is challenging | D．has challenged |
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The house is dirty because it ________ since they moved out.| A．doesn"t clean | B．isn"t cleaned | | C．hasn"t cleaned | D．hasn"t been cleaned |
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I know little about the accident because not much ______ about it up to now.| A．has said | B．has been said | C．had said | D．had been said |
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