题目内容
【题目】He is busy _______ his storybook.
A. write B. writing
C. writes D. to write
【答案】B
【解析】
句意：他忙着写他的故事书。write写；writing动名词形式；writes第三人称单数形式；to write
动词不定式。这个题目考查固定搭配，be busy doing sth. “忙于做某事”，故选B。
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题目内容
【题目】He is busy _______ his storybook.
A. write B. writing
C. writes D. to write
【答案】B
【解析】
句意：他忙着写他的故事书。write写；writing动名词形式；writes第三人称单数形式；to write
动词不定式。这个题目考查固定搭配，be busy doing sth. “忙于做某事”，故选B。