What really ____ is not failure itself, but the attitude we have towards it. [ ]

study finds that sitting can shorten aperson’s life almost as much as smoking can, which _______ just how damaginginactivity can be.

you be able to finish the report before Friday —I can’t ______ anything, but I’ll try mybest.

Give this book to　　you think needs it.

Why do youthink ______ — He could______ for exercise.