.Miss Li ________ as a biology teacher for fifteen years in our school, and now she is Party secretary of our city.
| A．works | B．worked | C．had worked | D．has worked |
Although her ability in art has not yet developed, she has great____ as an artist.
| A．success | B．potential | C．victory | D．possibility |
In face of difficulties the climbers ______ in the hope of reaching the top before dark.
| A．insisted on | B．looked up | C．turned away | D．kept on |
You are hurting me very greatly. I still may not forgive you, ____ you apologize.
| A．even though | B．so that | C．in case | D．in order that |
Unfortunately, George cannot be with us today so I am pleased to accept this award____ him.
| A．in honor of | B．instead of | C．on behalf of | D．for lack of |
My watch is under______, so they’ll repair it for free.
| A．protection | B．safety | C．guarantee | D．examination |