they spent as many hours as they could _______ their lesson
问题描述:
they spent as many hours as they could _______ their lesson
A.to study B.studying C.studied D.study
选什么的,为什么?
说是表示目的,感觉也有道理,可是觉得B也可以,搞不清楚了……
答
选B
spend 后加动名词