The key the earth is to change the way we live.
| A．to save; / | B．to saving; / |
| C．to save; how | D．to saving; how |
India is a country.
| A．developing | B．developed | C．develop | D．develops |
Zhai Zhigang is known the world a hero
his walk in space.
| A．as, as, for | B．to, as, for | C．to, as, on | D．in, for, as |
No one but her parents it.
| A．know | B．knows | C．is knowing | D．are knowing |
Alice, together with two boys,fo
r having broken the rule.
| A．was punished | B．punished | C．were punished | D．being punished |
When an
d where to build the new factory yet.
| A．is not decided | B．are not decided |
| C．has not been decided | D．have not decided |