问题

__________both sides accept the agreement will alasting peace be established in this region.

A:If only
B:Only if
C:unless
D:As long as

正确答案是：

同类题型

The teacher suggested _____ that we should make the most of time to study English well

I find it _______ to do some reading every day. —- Me too.

He didn’t go to the lecture this morning, did he—_____.Though he wasn’t feeling very well.

－Will Tony go skiing with us this Saturday－Sorry, I don’t know if he _____. But I know he _____ interest in sports.

The boy said that the fish his mothercooked tasted ______