know Jack spends at least as much time reading as he__________.A does writing B is writing C writes
问题描述：
know Jack spends at least as much time reading as he__________.
A does writing
B is writing
C writes
答
A does writing B is writing C writes 选哪个 为什么 A does代替spend spend st doing sth
答
A does writing
据我所知，杰克花在阅读方面的时间与花在写作方面的时间至少是同样多。（如不是更多的话）
答
A
as后面是省略句,这句话分析的时候把句子还原,可以去掉不影响句子主干的部分,就可以看出
I know Jack spends time reading as he spends writing
然后为了避免重复 将spends 用does代替.