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 Look! The workers        some subways now. The traffic in Hefei will be better soon.
#36476
A
build
B
are building
C
built
D
were building
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Mr. and Mrs. Black ______ back _________.
#41874
A
hasn’t come, yet
B
haven’t come , yet
C
haven’t come， already
D
hasn’t come , already
The population of the world         still         now.
#42222
A
will; grow
B
has; grown
C
is; growing
D
is; grown
If it              tomorrow, we won’t go to the park.
#42013
A
rained
B
rains
C
will rain
D
raining
His mother ____ in a village five years ago.
#41885
A
lives
B
lived
C
is living
D
will live
—What were you doing when I called you at 8 p.m. yesterday?  —I      the piano at that time.
#37831
A
play
B
is playing
C
played
D
was playing