Some solid evidence proves that water really exists on Mars, but unfortunately, there is still no of life.
| A．mark | B．sign | C．symbol | D．signal |
He wrote a lot of novels, none of _____ translated into a foreign language.
| A．them | B．which | C．it | D．what |
She is quite a different girl _____ she was five years ago.
| A．from | B．to | C．than | D．with |
Our football team will never take the defeat ____ down.
A. sitting B lying C. going D. climbing
Why don't you do it ______ other way?
| A．by | B．with | C．some | D．any |
We must show concern ______ each other.
| A．with | B．for | C．at | D．to |