he finished ( )his homeworkat 10 o'clock last night.to do,did,doing,do,为什么选c
问题描述:
he finished ( )his homeworkat 10 o'clock last night.to do,did,doing,do,为什么选c
答
finished doing sth 完成某事
是一个固定搭配。
答
finish +doing 完成做某事。
所以选c
答
doing
注:finish doing sth 固定用法