We don’t allow ____ in the office. But you are allowed ______ in the open air.

A．smoking; smoking

B．to smoke; to smoke

C．smoking; to smoke

D．smoke; smoking

某旅游景点商场销售可乐，每买3瓶可凭空瓶获赠1瓶可口可乐，某旅游团购买19瓶，结果每人都喝到了一瓶可乐，该旅游团有多少人( )

A．19

B．24

C．27

D．28