The boss(老板) makes the workers _____ these machines(机器) for ten hours a day.
It is said that the ____ was _____ by that _____ many years ago. A. invention, inventor, inventing B. inventor, invention, invented C. invention, invented, inventor
_____, I must try my best to study English. A.On purpose B. From now on C. After all
Teachers should ___ their students to practice __ English as much as possible. A. encourage, speaking B. let, speak C. make, speak
— There is still a copy of the book in the library. Will you go and borrow _____? — No, I’d rather buy one in the bookstore. A. one B. it C. another
_____ of the population in China ____ hardly to say. A. A number , is B. The number ,are C. The number , is