问题: 1.The dustbin was cleared __ the end of school.
1.The dustbin was cleared __ the end of school.
A.up in B.out on C.up at D.away at
2.About half of the population _______ working in the city and the number of workers_______ increasing
A.are ,is B.are,are C.is,is D,is ,are
两个介词为什么要这么选?
populaion不是不可数名词吗,为什么要选are?
解答:
当主语是表示 人口的百分之几、几分之几 时,谓语动词用复数形式。例如:
About seventy percent of the population in China are farmers. 中国大约有百分之七十的人口是农民。
所以这道题用are而不是is
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