-- The math problem _________ is not difficult.
--- But after several tries , I have to give up _________ on it .
| A．it’s , working | B．itself , to work | C．itself , working | D．its , to work |
— Joan has never been to Beijing. What about Jack?
—
| A．So has he. | B．Neither he has. | C．So he has. | D．Neither has he. |
— Ihavenoideato tell herthebadnews.
— I think tomorrow is the best time.
| A．how | B．when | C．where | D．why |
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 |