When I __(wait)for the bus,I saw him enter the shop yesterday.
A. was waiting
B. will wait
C. was waited
D. wait
They were reading the text aloud when the teacher ___(come) in.
A. coming
B. came
C. was coming
D. come
At this time last week,we ___(work) with our new project.
A. worked
B. to working
C. work
D. were working
We often ___(go) swimming when we were young.
A. going
B. would go
C. were used to go
D. were going
微信支付 
支付宝支付