On holidays, they prefer to _____ at home rather than _____.

The flight to New York was ________ becauseof the heavy fog.

-How far apart do Tom and Jack live?—–______I know, they live in the same neighborhood.

How time flies! Three years _______ since I _______ you last time.

The recent study has shown that people’s attitudes towards protecting the environment aren’t _________with their behavior in daily life.