Having a walk after supper is certainly good for the old people, but it remains ______ whetherthey will enjoy it.[ ]

This species has nearly _____ because its habitat has been destroyed by humans. [ ]

I’m sorry to have come late for the meeting.- Oh, it’s OK. With______ rush-hour traffic and_______ heavy rain, no wonder you were late.

Experts say walking is one of the best waysfor a person to _____ healthy

The old man all his money to a charity.— He is really great!