【題目】On Sunday morning I helped my mother _______ the cooking.
A.do
B.to doing
C.does
D.Doing

【答案】A
【解析】句意:在星期天早上,我?guī)椭覌寢屪鲲。do 做,動(dòng)詞原形;to doing 是介詞to后跟動(dòng)名詞形式;does第三人稱單數(shù)形式;doing動(dòng)名詞形式。這里使用的句型是help sb do sth.幫助某人做某事,故選A。

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