You had better book rooms at the hotel in advance _____you should find no room on your arrival.

A．so that

B．even if

C．in case

D．now that

（）等经营场所的经营者，应当对消费者尽到安全保障义务。

A.宾馆、商场

B.银行

C.机场、车站

D.电影院