According to the air traffic rules, you ___ switch off your mobile phone before boarding.
#87048
A
may
B
can
C
would
D
shall
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You _____ him the news; he knew it already. 
#89557
A
needn’t tell
B
needn’t have told
C
mightn’t tell
D
mightn’t have told
28. As far as I know, this man ____ risk anything than lose the ring for his wife.
#89006
A
would rather
B
had better
C
preferred
D
would like to