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
-- do you improve your English ?--I improve it practicing it more often.
#48333
A
How; with
B
What; with
C
How; by
D
What; by
---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
---How is Sandy? She stayed at home_____ the meeting last Sunday.---- Yes. She is much better now.
#47613
A
instead of attend
B
instead of attending
C
because attending
D
because of attend