they spent as much time as they could___their lessons A preparing B prepare C to prepare D prepared

they spent as much time as they could___their lessons A preparing B prepare C to prepare D prepared
为什么?
其他人气:263 ℃时间:2019-11-23 10:44:02
优质解答
他们花费了尽可能多的时间在功课上.spend的过去式 spent这个题目要考的是spend 的用法,后面接ing形式,as much time as they could是修饰语句的主干是they spent some time (in)___something.若表示"花费(时间、金...
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