I met Lucy in the primary school and we have been close friends ______.
#42859
A
as usual
B
again and again
C
sooner or later
D
ever since
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Thanks _____ your time. 
#40732
A
to
B
for
C
with
D
at
Yesterday, I visited a middle school in Taiyuan. There are about     students in it.
#37628
A
two thousand
B
two thousands
C
two thousands of
D
two thousand of