Question

Not until we have had a chance to discuss it thoroughly ________ perfectly.

A．the problem has been settled

B．has the problem been settled

C．will the problem be settled

D．the problem was settled

 

Answer 1

【答案】

C

【解析】C

解析　句意为：直到我们有机会充分讨论这个问题，它才能被圆满解决。not until置于句首，主句用部分倒装，助动词置于主语前；由until引导的时间状语从句用的是现在完成时(表即将完成的动作)可知，主句用一般将来时。