they spent as many hours as they could _______ their lesson
题目
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……
答案
选B
spend 后加动名词
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