While Jim ______the floor, someone ______at the door.
#40407
A
was sweeping, was knocking
B
was sweeping, knocked
C
swept ,was knocking
D
swept, knocked
推荐题目
---It’s raining! When did it start?---I don’t know exactly. In fact, it ____ all this afternoon.
#39869
A
lasts
B
has lasted
C
lasted
D
will last
Sam ______ coins since he was eleven years old, and now he has hundreds of them.
#42209
A
collected
B
had collected
C
has been collecting
D
had been collecting
Do you know over there?
#39593
A
what happening
B
what was happened
C
what is happening
D
what did happen
Tomorrow is Dragon Boat Day, so my mother and my grandma __ a big meal for our family in the kitchen.
#36158
A
are preparing
B
had prepared
C
prepare
D
prepared