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
Mary is flying to France soon. She will arrive ______ London _____ the morning of July 19.
#48505
A
to， on
B
in， on
C
in， in
D
at， in
--Do you know when the London 2012 Olympic Games will start?--It will start ________ July 27th, 2012. You can visit London that summer.
#48100
A
at
B
on
C
in
D
for
With a school built in the village, the children needn't climb______ the mountain for study.
#46074
A
over
B
at
C
for
D
in