What were you up to when your parents came in?— I__for a while and__some reading.A.was playing; was going to do B.played; did C.had played; was going to do D.had played; did为什么选c不选d啊?

问题描述:

What were you up to when your parents came in?— I__for a while and__some reading.
A.was playing; was going to do B.played; did
C.had played; was going to do D.had played; did
为什么选c不选d啊?

根据意思是说我过去正在做什么。。
C是对的。。

reading 'ing'是正在或将要做的意思.
did是已经做了的意思.
所以不能用在同一句.

这段对话的准确意思是:
——你爸妈进来时,你正在做什么
----我已经玩了一会儿了,正准备看会儿书.
理解了意思,时态自然就能选对!