My aunt has worked in a clinic ____2008.
#28845
A
after
B
before
C
till
D
since
推荐题目
-How amazing it is that astronauts are exploring outer space!-It’s a challenge, I guess, ______ man against nature.
#29137
A
of
B
for
C
by
D
about
—When will the game begin?—It will begin later than usual _________ 15 minutes．
#28915
A
in
B
on
C
by
D
at
As is known to all , theory is based on practice and _______ serves practice.
#27531
A
by chance
B
by turn
C
in return
D
in turn