The United States _______one of the lowest smoking rates －25.5 percent of the po
题型：不详难度：来源：
The United States _______one of the lowest smoking rates －25.5 percent of the population. |
答案
| C |
解析
| 考察主谓一致.句意:美国有最低的吸烟率_人口的22.5%. be动词的意思是,故用have没The United States指的美国,为第三人称单数,故谓语动词用单属形式,选C. |
举一反三
-- Have you moved into the new house?
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The news came as no surprise to me, for I _______of it earlier.| A．hear | B．heard | C．had heard | D．have heard |
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Mrs. Black would rather his husband did some housework when he’s free, but he _______.| A．wouldn’t | B．didn’t | C．doesn’t | D．wasn’t |
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.I was shocked to hear that your house_______into.| A．was breaking | B．had been broken | C．broke | D．has been broken |
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一Why are you so excited，John?
—Our class got the first prize in the singing contest at last，which we forward to．| A．have been looking | B．had been looking | | C．looked | D．had looked |
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