______，I will help you with your work.
| A．If I am possible | B．If it possible | C．If possible | D．Possible |
The scientists are trying to ___ natural energy to decrease air pollution.
| A．make friends with | B．make full use of | C．make notes of | D．make into |
China is ___ the east of Asia while Japan is ___ the east of China.
| A．in, on | B．on, to | C．in, to | D．to, on |
He spoke so slowly that we all could ___ him.
| A．catches | B．follow | C．understood | D．hearing |
I ___in North China, but now I ___ the weather in South China.
| A．used to live, am used to | B．used to living ; used to | C．was used to living; am used to | D．used to live; uesd to |
I have no idea __ the Greens has moved to Hangzhou or not.
| A．when | B．that | C．which | D．whether |