By the end of 2011, all of China’s public art galleries(画廊)________free to enter.
#42025
A
have been
B
had been
C
will be
D
would be
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—Mrs White, why are you standing here?—I’m waiting for my son. He ___________ back from school.
#37306
A
didn’t come
B
won’t come
C
hasn’t come
D
hadn’t come
 —Where’s Li Hua?—Look! He ____ tennis on the playground.
#40036
A
plays
B
played
C
playing
D
is playing