Mr. Li will go to Guangzhou by air. His workmates are at the airport.
| A．turning him off | B．seeing him off |
| C．taking him off | D．putting him off |
— What is the population of America?
— I don’t know. But I know it’s than that of China.
| A．less | B．bigger | C．smaller | D．larger |
I to Shanghai three times.
| A．have gone | B．have been | C．went | D．was |
— I’m leaving for Qingdao tomorrow.
—
| A．Congratulations! | B．I’m sorry to hear that. |
| C．You’re welcome! | D．Have a good trip! |
It’s said that the forest disappearing.
| A．is | B．am | C．are | D．was |