问题
Schools in the south tend to be better equipped，_______those in the north are relatively poor
A:while
B:since
C:when
D:as
B:since
C:when
D:as
正确答案是：
同类题型
When ________ different cultures，we often pay attention only to the differences .
His wife ________ him to stop smoking, but he didn’t listen.
I think computers play an important role in our life. Do you think so—Yes.________.
It’s better for you to help others on the farm during the harvest time.—_____.
– What a hard chair! –Yes, it is. But in fact, it is very comfortable to _____.