问题

__________both sides accept the agreement will a lasting 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

I had a good time last week.

Tourists can choose to visit Kunming __________ they like – spring, summer, autumn or winter.

The man ____ around our school is from America.

esident of the World Bank says he has a passionfor China, ______ he remembers starting as early as his childhood

The population level in this area has during the past 12 years. [ ]