China’s population is expected to increase to about 1.5 billion, ____ it will start to decline slowly.
My uncle’s house in the downtown area is much smaller than ours, but it twice____ expensive.
It is not who is right but what is right ____ is of importance.
.----Could I borrow your car to go shopping?
_______that I could use a kite to attract lighting, I decided to do an experiment.
I knew_____ John Lennon, but not ______famous one you know.