An ________ boy, Li Wen, works hard and gets good grades in his final exam.
| A． |
eighteen-year-olds |
B． |
eighteen-year-old |
C． |
eighteen years old |
You look quite tired. You’d better _____a good rest.
| A．stop to have | B．stop having | C．to stop to have | D．to stop having |
—How long have you _____the novel?
—Three days.
| A．kept | B．borrow | C．been | D．bought |
—Listen！Helen is singing in the next room.
—It _____be Helen .She has gone to Beijing.
| A．should | B．mustn’t | C．may | D．can’t |
Some people won’t realize the importance of their health _____they have lost it.
| A．after | B．when | C．until | D．as |
China has _____ area of about 9,600,000 square kilometers, including Diaoyu Island(钓鱼岛) .
| A．a | B．an | C．the | D．/ |