Since then the population of London________by almost 50,000 a year—an increase largely fuelled by immigration.
The house ______ Mr. Green's family for 50 years will be pulled down next week.
Some time after the rockets and the space shuttle are _____, the rocket will _____ the space shuttle and ____ the sea.
---May I look at the menu for a little while? ---Of course, ______ sir.
Considering his health, I advise him to ______ an hour or two each day to work out.
Riding bikes has advantages __________ driving cars ________ many aspects.