来源：学生作业帮 编辑：搜搜考试网作业帮 分类：英语作业 时间：2024/06/27 18:23:25
He spent half an hour ___ his homework. A.finish doing B.to finish doing C.finishing to do D.finishing doing
解题思路：
解题过程：
finish完成.后面需要加动词的-ing形式,不能加to do形式.切记.例如: I haven't finished reading the book yet. 我还没读完这本书。
最终答案：略
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