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题目
题型:不详难度:来源:
—Look! Someone ________ the floor.
—Well, it wasn"t me. I went shopping just now.
A.had sweptB.has swept
C.was sweepingD.is sweeping

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。
核心考点
试题【—Look! Someone ________ the floor.—Well, it wasn"t me. I went shopping just now.】;主要考察你对现在完成时等知识点的理解。[详细]
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 arriveB.isn"t arriving
C.hadn"t arrivedD.hasn"t arrived

题型:不详难度:| 查看答案
Kate  ________    on her new novel, which is supposed to come out next month.
A.was workingB.had worked
C.will be workingD.has been working

题型:不详难度:| 查看答案
Up to now, our society ________ with limited living space and a shortage of natural resources.
A.has been challengedB.is being challenged
C.is challengingD.has challenged

题型:不详难度:| 查看答案
The house is dirty because it ________ since they moved out.
A.doesn"t cleanB.isn"t cleaned
C.hasn"t cleanedD.hasn"t been cleaned

题型:不详难度:| 查看答案
I know little about the accident because not much ______ about it up to now.
A.has saidB.has been saidC.had saidD.had been said

题型:不详难度:| 查看答案
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