题目内容
17.-What are the _______ doing there?-They are busy _______ their science experiment.( )
A. | Boys students; to do | B. | Boy students; to do | ||
C. | Boys students; doing | D. | Boy students; doing |
分析 --那些男生同学在那里干什么?
--他们正忙着做科学实验.
解答 答案:D 考查名词复数和非谓语动词的用法.男学生的复数表示为boy students,所以排除A和C.根据固定结构"be busy doing sth"忙于做某事.可知应该是doing,所以排除B,故选:D.
点评 本题主要考查名词的复数形式和非谓语动词的用法.做此类题目,要注意名词复数形式和固定结构的形式,才能更好的辨别答案.
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