With their help, we finished the work with _______ people and ______ time.

The number of students in our school ___ 9,000 and a number of them ___ from the city.

Jim, who taught ________Chinese before you came to school?—Nobody. I learned it by _______.

She usually buys CDs her favourite singers.[ ]

Frank looks very worried today. There must be ________ wrong with him.