The old man believes that his neighbor who smokes _____ for the big fire.

You look happy today Is there anythinggood— I’m very delighted ______ as one of theexchange students

It was so nice of you to come to our aid. I don’t think we ______ it without you.

Because of her fear of flying, Alice would rather take a long train journey ______ travel by air

Doing some __________ every day is good for your health .