The second season of A Bite of China ________ for a month. It turns out to be the most popular documentary.
#36273
A
began
B
has begun
C
has been on
D
had begun
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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
This morning, when I walked by, I saw many children ____ in the park.
#42558
A
played
B
play
C
playing
D
to play