Have the villagers already known ________ we’ll do is to rebuild the bridge?
| A．this | B．that | C．what | D．which |
Before selecting the curtain for your newly-decorated house，it’s important to know what colors look great _______ the wall paper．
| A．on | B．with | C．against | D．in |
___________you try to do something beyond what you have already mastered, you will never grow.
| A．Since | B．When | C．Though | D．Unless |
The smog arrived in the Yangtze River Delta region on Nov．30，_________the air quality in 1 2 cities out of 25 was rated as severely polluted by Dec．1．
| A．where | B．when | C．which | D．what |
China _______________a high-speed railway network covering almost all its cities with a population of of more than 500，000 by 2015．
| A．is setting up | B．will set up |
| C．has set up | D．will have set up |
Situated on the southeast China coast，Fujian Province is separated by_________180—km strait from Taiwan，__________largest island in China.
| A．不填; the | B．a； the | C．a；不填 | D．the；a |