According to the air traffic rules, you ___ switch off your mobile phone before boarding.
| A．may | B．can | C．would | D．should |
相关试题
What terrible news it was for her!She attempted to smile，but her voiceher．
| A．turned；out | B．gave；away | C．broke；down | D．turned；down |
-Which of the ways should I take to the village?
-way as you please．All seem to be equal in distance．
| A．Neither | B．None | C．Any | D．Either |
This law which has just been passed is athat the government will pay more attention to protecting wildlife．
| A．sign | B．record | C．mark | D．signal |
This book tellslife story of Jolin Smith，who leftschool
and worked for a newspaper at the age of l6．
A．the ；the |
B．a；the | C．the；不填 | D．a；不填 |
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