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Tom thanked his sister  helping him    his lessons.
#49181
A
for; with
B
to; in
C
of; about
D
on; at
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What did your mother do ______ the market last Sunday?
#49681
A
into
B
at
C
to
D
for
There is something wrong _________ my computer.
#46445
A
with
B
about
C
to
D
for
 ----How do you improve your listening skill, Mary? ----I often do it _______ tapes and English radios.
#47453
A
by hearing
B
in listening to
C
by listening to
D
for listening
Vegetables are good      our health, so we should eat them every day.
#50530
A
at
B
for
C
in
D
with
Jim’s shirt is made _____ silk , and it’s made ______ china.
#48626
A
in, of
B
from, of
C
of , in
D
from , in