n’t go out in this weather,”said Bob,outof the window.

It is required that in no case________ our password.

I’m afraid I couldn’t go to your birthdayparty.I have a test next Monday.—Oh，！You’re my best friend and you must be there！

are very ______: they can live in forests, onopen plains, or in the snows of the Arctic.

My sister Lucy and I ______ homework in the room now.