How long ______ he ______ a fever— Ever since last night.

Robert Collier once said, “A single idea—the sudden flash of a thought — __________be worth a million dollars.”

rtain Davel’stold you his business troubles ,it’s no secret that he owes a lot of money to the bank

the average age of the population increases, there are more and more old people to care for.

The watch ____ on his way to school is made in Hongkong.