Question

【题目】— Is John in his library?
— Maybe. I saw him ________ out with some books just now.
A.go
B.going
C.to go
D.went

Answer 1

【答案】A
【解析】句意：约翰在他的图书馆吗？没有，我看到他刚才拿着书出去了。see sb do sth，看到某人做了某事，强调看到的全过程，s ee sb doing sth，看到某人正在做某事，强调同时进行。根据句意可知是看到出去的过程，故选A。