问题

He left home __a cold morning, and I heard that he was coming back _ the late afternoon.

A:in; on
B:on; on
C:in; in
D:on; in;

正确答案是：

同类题型

In order to make our city green，______.

I don’t think this question is worthy ____.

________ the delayed flight will take off depends much on the weather.

By working slowly but surely towards your goal, you’ll _____ succeed

Could I please _______ –Sorry, you can’t. Your father has to use it.