They stood _____ at each other as if they were enemies.

The red-crowned crane is one of _______ in the world.

Sam, in every way, has handled the challenge, _____ his friend_____how he’s achieved success in spite of the difficulties.

Our country is_______ 56 nations and_______ of them can be tom away from the motherland.

World Wildlife Fund ______very much the efforts that China has made to protect endangered species from being further endangered.[ ]