are the children doing their homework
Thechildren()doingtheirhomework.A.aren'tB.isn'tC.don'tD.not...
The children ( ) doing their homework.
A.aren't B.isn't C.don't D.not 展开
A.aren't B.isn't C.don't D.not 展开
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A.
children是复数,此句为进行时态,“孩子们现在没有在做作业.”
所以选be动词,选are not
children是复数,此句为进行时态,“孩子们现在没有在做作业.”
所以选be动词,选are not
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