-Why does the Lake smell terrible?-Because large quantities of water__________.
题型:不详难度:来源:
-Why does the Lake smell terrible? -Because large quantities of water__________.
A.have polluted | B.is being polluted | C.has been polluted | D.have been polluted |
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答案
D |
解析
考查动词时态,语态和主谓语一致。根据前一分句可知所填动词表示过去发生的动作对现在产生的影响,时态用现在完成时,动词与主语是被动关系,用被动语态。主语是large quantities of water,其中心词是quantities,是复数,谓语动词用复数,选D。 |
举一反三
My parents have promised to come to see me before I _______ for Africa.
A.have left | B.leave | C.left | D.will leave |
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---Do you want a lift home? ---It’s very kind of you, but I have a much late in the office. I overslept this morning because my morning clock _______.
A.doesn’t go off | B.won’t gone | C.wasn’t going off | D.didn’t go on |
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----Do you regret not having gone abroad? ----Not at all. I_____ as much, but I’m glad to contribute to our motherland. A. didn’t earn B. hadn’t earned D. am not earning D. haven’t earned |
Dr. Smith, together with his wife and daughters, _____visit Beijing this summer.A.is going to | B.are going to | C.was going to | D.were going to |
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------- What is the price of petrol these days -------Oh, it ______ sharply since last month.
A.is raised | B.has risen | C.has arisen | D.is increased |
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