—____ I swim here?—I’m sorry. Children ____ swim alone here..

—Susan’s parents have bought a large house with a swimming pool.—It               be very expensive.

---My house is very near a busy street.  ---It ________ be very quiet.  

If I _______ plan to do anything I wanted to, I’d like to go to Tibet and travel through as much of it as possible.

The public transportation is very convenient in that big city, so there ________ be any difficulty in traveling around.