---How long do you think it will be _____China becomes a developed country?
---At least 20 years, I guess.
| A．that | B．until | C．when | D．before |
To succeed as an artist, one must ________talent and discipline.
| A．join | B．relate |
| C．associate | D．combine |
The ______ of blood made the girl feel sick and she began to cry.
| A．scene | B．scenery |
| C．sight | D．view |
—Jack, you seem in high spirits.
—__________ We won the match 4-0.
| A．Guess what? | B．So what? |
| C．No wonder. | D．No doubt. |
There is a peaceful and calm ________in the country, quite different from that of a big city.
| A．climate | B．atmosphere |
| C．system | D．situation |
After the new technique was introduced, the factory produced _________ bikes in 2010 as the year before.
| A．as twice many | B．as many twice |
| C．twice as many | D．twice many as |