问题

Schools in the north tend to be better equipped, ______ those in the south are relatively poor

A:as
B:unless
C:when
D:while

正确答案是：

同类题型

Why is Jack ________ —He has a bad cold and has to stay in bed.

artist who has no lack of passion and great courage to overcome any difficulty, inspirations of his art will never _______.

Be careful! The tiger is _______.

We consider ____ absolutelynecessary that we should open our door to the outside world

During the 1950s，R&Bchanged modern music further and led to＿＿＿＿we know asrock and roll