According to the air traffic rules, you ___ switch off your mobile phone before boarding.
#90472
A
may
B
can
C
would
D
should
推荐题目
He insisted that we all _____ in his office at one o’clock.
#89359
A
be      
B
to be
C
would be  
D
shall be
 The manager demanded that the task ______ within a week.
#87298
A
must complete
B
would be completed
C
be completed
D
must be completed
We were caught in the heavy traffic jam. Otherwise, we _____ on time.
#88142
A
would have arrived
B
arrived
C
must have arrived
D
should arrive