问题

They must have gotten to the top of the mountain by now. They_____ before the sun rose.

A:settled down
B:set out
C:took off
D:turned up

正确答案是：

同类题型

It is no use________without doing

The time he has devoted in the past years __________ the disabled is now consideredto be __________ great value __________ him.

下列各句中，加横线的成语使用恰当的一句是

This is my father. ______ is a farmer in the north of China.

It is not how much we do but how much love we put into what we do______benefits our work most.