Another type of pollution, ______ thermal pollution (热污染), is caused by fuel-burning.
| A．calling | B．called | C．to call | D．calls |
. Han Han wrote several novels, almost all of them_______by teenagers.
| A．appreciated | B．are appreciated | C．were appreciated | D．having appreciated |
I don’t like drinking milk. Please _______coffee for milk.
| A．replace | B．provide | C．serve | D．substitute |
. I would appreciate ______if you could lend me a hand.
| A．you | B．this | C．it | D．that |
. My first summer vocation in the high school, _______I spent a fortnight on the farm, is really unforgettable.
| A．when | B．that | C．which | D．the one |
The 2010 World Expo in Shanghai is_____ to any other fair held in China this year.
| A．important | B．superior | C．senior | D．significant |