While I _______ down the street, I _______ my classmates.
#41817
A
was walking; met
B
walked; met
C
was walking; was meeting
D
walked; was meeting
推荐题目
By the end of last month, I _____ all the CDs of Justin Bieber.
#42234
A
collect
B
collected
C
have collected
D
had collected
The scientists ________ on the new medicine for two years. They will succeed in no time.
#38384
A
work
B
are working
C
have worked
D
will work
I ________ my homework while my parents ________ TV at 9 last night.
#38497
A
did; have watched
B
had done; were watching
C
was doing; were watching
D
would do; were watching
—Where are the boys now? —They football on the playground
#40663
A
play
B
will play
C
are playing
D
played