AccordingtothenewrulesontobaccouseinBeijingwhichcamein...

問題詳情：

 According to the new rules on tobacco use in Beijing which came into force on June 1, all indoor public places and many outdoor public places in Beijing ______ be 100-percent smoke-free.

A. will                      B. shall                 C. should               D. can

【回答】

B

知識點：情態動詞

題型：選擇題