they spent as much time as they could___their lessons A preparing B prepare C to prepare D prepared
题目
they spent as much time as they could___their lessons A preparing B prepare C to prepare D prepared
为什么?
答案
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...
举一反三
已知函数f（x）=x，g（x）=alnx，a∈R．若曲线y=f（x）与曲线y=g（x）相交，且在交点处有相同的切线，求a的值和该切线方程．
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
最新试题
热门考点