_______ entering the classroom, remember to take your seat and turn off your cell phone.
#26478
A
At
B
From
C
Upon
D
As
推荐题目
In the Great Depression, the American government couldn’t find good solutions _____ the unemployment problem
#27631
A
of
B
to
C
on
D
about
Please keep me informed _________ the changes in case they affect our work.
#26698
A
of
B
for
C
with
D
by
（2014年北京市西城区高三5月二模试题）33. Based on a true story, the film shows a hero racing ______ time to get back the stolen papers.
#25135
A
behind
B
against
C
about
D
at
They are quite different ________ each other ________their tastes.
#25155
A
from；in
B
in; from
C
with; on
D
with; in