题目内容
【题目】My grandfather likes to do morning ______. He often ______ in the park.
A. exercise; exercise
B. exercises; exercise
C. exercises; exercises
D. exercise; exercises
【答案】C
【解析】句意：我爷爷喜欢做早操，他经常去公园锻炼。do morning exercises做早操，exercise做运动，锻炼，动词，主语he单三，谓语动词用单数形式；故选C
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