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Mike often exercises      half an hour in the morning.
#47858
A
at
B
of
C
with
D
for
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－Do you like to play ____ your friends?     －Yes, I do.
#50064
A
for
B
with
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and
D
to
We couldn't finish our work so early        your help.
#46140
A
without
B
with
C
for
D
by
---When is your birthday? -----It’s_______ Jan 1st, New Year’s Day.
#46830
A
on
B
in
C
at
D
about
They can provide special places _________ homeless people ________ stay.
#46027
A
with ; for
B
for; to
C
with; to
D
for; with
If you sit in a chair _____a long time, your back may begin to hurt.
#50771
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at
B
in
C
on
D
for