We know Lady Gaga is well-known all over the world .

You must keep the door _______ when you leave your room. — But I want to get the fresh air. I think I can keep the window ________ instead.

I like the program Man and Nature. — But I Sports News.

I’m not sure if it _________tomorrow。If it __________ ,we won’t climb the South Hill.

I think _______ is meaningful to help other people.