According to the air traffic rules, you______switch off your mobile phone before bearding.
A.may
B.can
C.would
D.should
答案:D
此题考查情态动词的用法。根据句意“按照空中交通规则,你应当在登机前关掉你的手机”,所以只有should(应该,应当)符合题意。
According to the air traffic rules, you______switch off your mobile phone before bearding.
A.may
B.can
C.would
D.should
答案:D
此题考查情态动词的用法。根据句意“按照空中交通规则,你应当在登机前关掉你的手机”,所以只有should(应该,应当)符合题意。