Whenever you meet with difficulties, you can ask the policeman ____help. 
#51261
A
at
B
in
C
for
D
with
推荐题目
There will be a heavy storm ___________ this evening.
#46643
A
with thunder and lighting
B
had thunder and lighting
C
had thunder and lightning
D
with thunder and lightning
We have socks ___all colors ___only $5 .
#46778
A
at ; in
B
in ; for
C
at ; at
D
for; at
She will be a doctor------ two months.
#49959
A
after
B
on
C
in
D
at
It is silly ______ you to give up ______ to America for further study.
#50501
A
for, to go
B
for, going
C
of, to go
D
of, going