The market for ______ used computers is getting larger and larger as______ years go on.
After talking with his father for about half an hour, he felt better and began to know how to ____ this kind of situation.
---I failed today’s math test! What shall I do?---____! Try once more.
He lost his job three years ago; _____, he was seriously injured in an accident last week.
Of all the subjects, I like ____ history best because it gives us ____ useful knowledge of things in the past.
____ of danger in the street at night, she had to go home, with a friend ____ her.