- Has your friend completed his design?   - Not yet. He ________ on it last night.
#36803
A
worked
B
has worked
C
is working
D
was working
推荐题目
After I ______ my homework, I went out to an aquarium.
#41860
A
was doing
B
did
C
does
D
would do
The film _________ for twenty minutes when I got to the cinema.
#40058
A
has begun
B
had begun
C
has been on
D
had been on
Great changes __________ in China in the past few years.
#36358
A
were taken place
B
took place
C
have been taken place
D
have taken place