I often go to sleep ________10:00 p.m. ________7:00 a.m.．
#49545
A
at, at
B
at, and
C
between, and
D
from, to
推荐题目
They put their books____to make the library clean and tidy.
#46653
A
under the chair
B
on the floor
C
behind the door
D
in the bookcase
They think wolves are dangerous _________humans so this leads _______the danger of wolves.
#46980
A
for; to
B
as; for
C
to; to
D
at; in
It’s important ___ us to protect the environment and it’s wise ____ us to save water .
#46629
A
for , for
B
of , of
C
for , of
D
of , for