Scientists are working hard to make _______ possible for people to live on Mars in the future.
| A．it | B．that | C．this | D．one |
The story is really interesting, but I don’t think ______ will like it.
| A．somebody | B．anybody | C．everybody | D．nobody |
I hope you ________to me soon.
| A．to write | B．will write | C．write | D．wrote |
The light is still ,Mr. Green _________at home now.
| A．on, can be | B．down, may be |
| C．on, must be | D．up, can’t be |
It’s not wise ______ think you are always right.
| A．of you | B．for you | C．for you to | D．of you to |
It’s impolite to read _______ letter .
| A．else someone’s | B．someone’s else |
| C．someone else’s | D．someone else |