问题补充:
—Were you in the library when Jack arrived there?
—Yes, but I soon afterwards.
A. had left
B. left
C. would leave
D. will leave
答案:
A. had left
(答案→)B. left
C. would leave
D. will leave
解析:考查时态,句意是:--当杰克到图书馆的时候你在吗?--是的,但后来不久我就走了。说明我走了动作发生在杰克到之前,A不对,但是我走了动作发生在现在前,所以用过去时,选B。