Low-carbon lifestyle is of great benefit to improve the world environment．________can be enjoyed from it until you have a deep understanding of it, however．
| A．Something | B．Nothing | C．Few | D．Much |
9. The doctor advised Vera strongly that she should take a holiday, but _______ didn’t help.
| A．it | B．she | C．which | D．He |
10 .--- Do you like _____here?
---Oh, yes, the air, the weather and the way of life. Everything is so nice.
| A．this | B．there | C．that | D．It |
11 .He felt_____ to work for human rights and progress.
| A．it his duty | B．his duty | C．that is a duty | D．that is his duty |
12.It took us over an hour_______along the street.
| A．walk | B．to walk | C．walking | D．walked |
13.I think it a great honour_______to visit your country.
| A．to invite | B．inviting | C．having invited | D．to be invited |