My grandmother ______a lot of changes in Tianjin since she came here  .
#38797
A
sees
B
can   see
C
will see
D
has seen
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 We only heard about the meeting yesterday, so it ______ yet.
#42760
A
didn’t prepare
B
hasn’t prepared
C
wasn’t prepared
D
hasn’t been prepared
A young man ___ John _____ school recently.
#42489
A
calling; has left
B
called; will leave
C
calling; is leaving
D
called; has left