—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
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I ____my CD here and there, but I still can’t find it.
#42598
A
have looked for
B
look for
C
will look for
D
was looking for
Not only his parents but also his brother to the Summer Palace. They haven’t been back.
#41984
A
have been
B
have gone
C
has been
D
has gone