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If you sit in a chair _____a long time, your back may begin to hurt.
#50771
A
at
B
in
C
on
D
for
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Be polite ____ others!
#48477
A
to
B
at
C
about
D
on
–Thank you very much. ________ your help, I can’t finish my project in time.–It’s my pleasure.
#48031
A
Besides
B
Under
C
Except
D
Without
Which team are you going to play ________, do you know?
#46311
A
on
B
against
C
to
D
about
Reading_____the sun is bad for your eyes.
#48706
A
under
B
in
C
at
D
on
That’s very kind _________you _________me.
#47160
A
of; help
B
of; to help
C
to; to help
D
for; helping