题干
- What were you up to when she dropped in ?
---I _____ for a while and ____ some reading.
---I _____ for a while and ____ some reading.
A：had played; did
B：played; did
C：had played; was going to do
D：was playing; was going to do
答案(点此获取答案解析）
C
，
满足：
，
，
，则
=" (" )