---______ is the population of the town?---Over 20,000. And a third of the population ____ workers of the car factory.
I felt ___________when I heard the __________ news.
My parents want me _______a writer.
Which do you like ______, apples or oranges?
—How many birds can you see in the trees? —I can see _____ birds in them.
Although he is very old, ______ he works very hard.