We have a big library ______ lots of useful books.
#50302
A
in
B
at
C
with
D
on
推荐题目
–How do you learn English so well? –____ chatting with my uncle in America online.
#50180
A
For
B
By
C
In
D
With
Sound travels ______ air ______ a speed of about 340 metres per second.
#47987
A
over; in
B
through; at
C
by; at
D
through; over
