Yesterday, they talked about something important _______ the phone.
#46119
A
in
B
of
C
from
D
on
推荐题目
Sound travels ______ air ______ a speed of about 340 metres per second.
#47987
A
over; in
B
through; at
C
by; at
D
through; over
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
