_____entering the classroom, remember to take your seat and turn off your cell phone.
#25297
A
At
B
From
C
Upon
D
As
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In Britain,sales of cigarettes have been reduced __________ 30% in the past ten years.
#28450
A
for
B
to
C
from
D
by
Some of the members demanded to know why they had been kept the true facts until they reached the present critical stage.
#25909
A
in view of
B
in honor of
C
in place of
D
in ignorance of
The speech by the governor of Guizhou province at the ninth Chinese National Ethnic Games is deeply impressed _______ my memory.
#26722
A
to
B
over
C
by
D
on