I study for a test _________ working with a group. 
#50252
A
in
B
by
C
at
D
to
推荐题目
There are some trees _____ our classroom.
#48707
A
in front
B
in the front of
C
in front of
D
front of
--- What time do I have to leave, Dr Li?--- _________, don’t stay here ________ visiting hours.
#46086
A
Usually; over
B
Regularly; above
C
Anyway; beyond
D
Mostly; during
They didn’t continue to climb up the mountain __________ the bad weather. 
#48022
A
because
B
because of
C
as a result
D
in fact