---Excuse me, when is the Christmas party of our school? ---This year, it's_______18:00_______ Monday evening.
#46987
A
on; in
B
at; on
C
at; in
D
on; on
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Exercise is good ______us.  
#47654
A
at
B
in
C
of
D
for
We have lessons _____ 7.30 a.m ______ 11.30 a.m.
#49093
A
at, at
B
from, to
C
at, to
D
between, to
 The boy is ________ the room.
#48361
A
on
B
in
C
at
D
under