Chinese Premier Li Keqiang paid ______ official visit to Russia, with ______ series of deals ranging from energy to people-to-people exchanges expected to be signed．
| A．/; a | B．an; the | C．an; a | D．/; / |
Sorry, I can’t go with you. I’m a serious stomachache.
| A．suffering |
| B．suffered |
| C．suffering from |
| D．suffered from |
You cannot accept an opinion ________to you unless it is based on facts.
| A．offering | B．to offer |
| C．having offered | D．offered |
It’s much easier to make friends ______ you have similar interests.
| A．unless | B．when | C．even though | D．so that |
People complain that decisions to approve or deny a permit are often ______ rather than based on fixed criteria.
| A．appropriate | B．conscious |
| C．arbitrary | D．controversial |
It was not until near the end of the letter ______ she mentioned her own plan.
| A．that | B．where | C．why | D．when |