It was the third time that she ______to this mountain village to see the children.

How does Jack usually go to schoolHe _____ride a bike, but now he _____ walking there.

Every possible means ______ to prevent the air pollution, but the sky is still not clear.

You have to put the past you before you can move on.

The students from Xinjiang enjoy staying in our school because everyone here is _________ to them.