Scientists say it may be one year or so ________ it is possible to test the new medicine on human patients.
| A．when | B．after | C．before | D．since |
Since anti-corruption campaign launched in 2012, the first female major general, Gao Xiaoyan is under investigation by China’s military authorities for being suspected of ______ her position.
| A．appointing | B．abolishing |
| C．abandoning | D．abusing |
As there was just one vacant position, all the candidates tried their best to leave a favorable ______ on the interviewer to make themselves stand out.
| A．impression | B．presentation |
| C．reputation | D．appreciation |
Tomorrow being the last day, you should hand in your composition by emails to meet the ______.
| A．headline | B．deadline |
| C．schedule | D．plan |
My father bought me several books, but _____ was interesting.
| A．most of them | B．none of them |
| C．none of which | D．neither of which |
He failed in the exam, ______ proves that he wasn’t working hard enough.
| A．which | B．what | C．it | D．that |