_________ you take an active part in physical activity ______ be able to keep fit and stay healthy.
| A．Only if; you will | B．Only if; will you |
| C．Unless; you will | D．Unless; will you |
Many towns and villages had their water supply ________ because there was no electricity.
| A．cut through | B．cut off | C．cut up | D．cut down |
The keythe earth is to change the waywe live.
| A．to save; / | B．to saving; / |
| C．to save; how | D．to saving; how |
There are over 100 night clubs in the city, but you don’t often seethat is empty.
| A．one | B．the one | C．it | D．that |
It is _____ we do ---- you and I ____ changes the world.
| A．that; that | B．that; what | C．what; that | D．what; what |
The news has spread all over the country _____ Premier Wen Jiabao will attend the Copenhagen summit next week.
| A．that | B．which | C．whether | D．what |