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

正确答案是：

同类题型

_______ they_______, their classmates were all in the classroom.

Can I go to the museum this Sunday— No. It is ______ only from Monday to Friday.

Many experts considered _________ quite necessary for the people in the earthquake-hit areas to be given a lecture on psychological comfort.[ ]

My new novel has disappeared.Who _______ have taken it?

He sat at the front ________ be able to hear everything the teacher said.[ ]