--Whose T-shirt is this? --It       be John’s. It’s much too small for him.

---Could I use your bike? ---Yes, of course you_________.

---Be polite . You _____ talk to the old like that !  ---Sorry , I won’t .

—The government should try to balance economic growth and pollution from industry.—____. It’s time to do it.

Liza ______ well not want to go on the trip — she hates traveling.