We will go climbing next Sunday. Will you __________us?

She’s having a lot of trouble with the new computer, but she doesn’t know whom to ________.

In much of the animal world, night is the time ______ for sleep—pure and simple. 

It took him a long time to ______ the skills needed to become a professional artist.

We should take care of the blind. It is immoral to _______ them.

As far as I know ,the sports meet has been_________until next week because of the bad weather.

 As I______ the little grass house in the forest, my heart beat more and more quickly.

Don’t leave the chairs about, or you may ______ them at night.

She felt extremely tired, and her spirits _________.

A good friend is like a mirror. Don’t let a little agreement_____ a great friendship.