There is __________ “u” and __________ “n” in the word “unhappy”.
_____, 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
—This physics problem is too difficult. Can you show me _____, Wang Li? —Sure. A. what to work it out B. what to work out it C. how to work it out