Sound travels ______ air ______ a speed of about 340 metres per second.
#47987
A
over; in
B
through; at
C
by; at
D
through; over
推荐题目
This pair of jeans looks nice___ Sandy ,because she looks very nice___ blue.
#50285
A
on; in
B
in; on
C
for; on
D
to; in
There is going to be a wonderful party _______ the evening of October 1st, 2009.
#50201
A
in
B
on
C
at
D
for
