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They to work hard. [ ] A.made up their mindB.made up their minds C.made up his m

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They to work hard. [ ] A.made up their mindB.made up their minds C.made up his m

They ________ to work hard.

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A.made up their mindB.made up their mindsC.made up his mindD.made their minds

试题答案

答案:B

提示:

make up one's mind 中mind是可数名词,有单复数形式变化.