单项选择题

We booked rooms at the hotel ______ we should find no vacancies on our arrival.

A．whenever
B．if
C．since
D．lest
<上一题 目录 下一题>
热门 试题

单项选择题
Since 1970, millions of enthusiasts ______ a substance which they believe can remedy the common cold — Vitamin C.
A．have taken
B．have been taking
C．have been taken
D．have being taken
单项选择题
His wife divorced him because he was addicted ______.
A．to gamble
B．gambling
C．to gambling
D．with gambling
相关试题