. One or perhaps more pages _______.
A.is missing | B.has been missed | C.are missing | D.was missing |
——Did you inform Helen of the plan put forward at the meeting?
—Of course. ________ I saw her.
A.So long as | B.If only |
C.The moment | D.Any time |
Please call my secretary to arrange a meeting this afternoon, or ________ it is convenient to you.
A.whenever | B.however |
C.whichever | D.wherever |
She usually keeps her valuables, such as jewels and money, ________ she believes secure.
A.even if | B.in case |
C.where | D.that |
How can they expect to learn anything ________ they never listen?
A.whether | B.when |
C.but | D.unless |
—I wonder how much you charge for your services.
—The first two are free ________ the third costs $30.
A.while | B.until |
C.when | D.before |