According to the air traffic rules，you should your mobile phone before boarding．
#70302
A
switch over
B
switch on
C
switch off
D
switch round
推荐题目
The fact that she never apologized ____a lot about what kind of person she is.
#81328
A
says
B
talks
C
appears
D
declares
Her health under the pressure of work and she had to stay in hospital for a month.
#71618
A
broke up
B
broke down
C
broke out
D
broke away
After thirty years of separation, I _____ with my sister. How happy we were!
#74782
A
kept in touch
B
caught up
C
kept up
D
got in touch
It ___ to be raining when we went to see him off at a railway station.
#80731
A
happened
B
had happened
C
took place
D
took
Fur coats are good means to ______ people from frost bites in cold winter.
#64456
A
stop
B
prevent
C
protect
D
keep