There is going to be a wonderful party _______ the evening of October 1st, 2009.
#50201
A
in
B
on
C
at
D
for
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We’d better not keep the lights______ when we have PE classes outside.
#48235
A
off
B
on
C
open
D
closed
---________do you spend _English learning every day? ---For about an hour.
#50368
A
How long, in
B
How many times, on
C
How often, on
D
How long, on
The robber was caught by two men ______ police uniform _________.
#51266
A
in; at the once
B
in; at once
C
on,; at the once
D
on; at once