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
All animals _______ men feed on plants or other animals.
#45908
A
among
B
including
C
except
D
with
What were you doing     the rainstorm?
#46150
A
at that time
B
in time
C
at the time of
D
when
He was _______ with breaking _________ several computer systems.
#48316
A
charging; on
B
to charge; in
C
charged, into
D
charges; to