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Yesterday, they talked about something important _______ the phone.
#46119
A
in
B
of
C
from
D
on
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—What’s this __________ English?—A pen.
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A
in
B
on
C
at
D
For
Sound travels ______ air ______ a speed of about 340 metres per second.
#47987
A
over; in
B
through; at
C
by; at
D
through; over
Many people are getting ready ____ the Lantern Festival.
#50043
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on
B
with
C
to
D
for
The students will stay _____ home and send their homework to the teacher _____ email .
#50881
A
at , by
B
at , at
C
by, by
D
by , at
—  A Boeing 777-200 plane became lost in communication (失去联系) at midnight       the early morning of March 8th．   —I was amazed(震惊) to hear that.
#45881
A
on
B
in
C
at
D
of