__________ is important to a person is ___________ he must know _________ he is fit for

______ the farmers discovered theentrance to the secret cave in the valley—Totally by chance

—Why didn’t you come to the cinema with us last Saturday?—Oh, sorry. But I________ the film.[ ]

I’m too nervous to give a talk before so many people —_________, Maria. I think you can make it.

I’m very tired these days preparing for the test. — Why not ____some music It can help you ______.