_____ people in the world are sending are receiving e-mails every day.
Don’t forget to put the book on the shelf,___?
—You seem to like sweets.—___.That’s probably why I’m becoming fatter and fatter.
We have two rooms___, but I can’t decide___.
—Must I clean the room now ?—No, you___. You can do it tomorrow.
My cousin has been happy since he___ to spend more time with his friends.