When I walk_____ the classroom, all the students are listening carefully. 
#50479
A
passed
B
to pass
C
past
D
pass
推荐题目
We have socks ___all colors ___only $5 .
#46778
A
at ; in
B
in ; for
C
at ; at
D
for; at
Mr. Li said he would show the students ____ the New YorkCity, which is famous ____ the world.
#50131
A
about; at
B
around; in
C
through; in
D
towards; around