Question

--_______ will the meeting last?
--_______ they reach an agreement.

A．How long; Not until	B．When; Not until
C．How long; Until	D．When; Until

Answer 1

C

試題分析：句意：會議要開多久？直到他們達成協議。對一段時間的提問常用疑問詞how long；until直到；not…until直到……才，但通常不用not until，所以選C。