If you sit in a chair _____a long time, your back may begin to hurt.
#50771
A
at
B
in
C
on
D
for
推荐题目
—Hi, Jane. What time do you get up _____ weekdays?—I usually get up _____ about six o’clock.
#46759
A
in; at
B
on; at
C
at; at
D
on; on
It’s important _________ us _________ some good friends.
#47232
A
for, having
B
of, to have
C
for, to have
D
of, having
—Excuse me, where’s the West Hill Farm, please?—Go ______ the forest and _______ the foot of the mountain you will find it.
#48520
A
through,at
B
across,at
C
through,under
D
past,under