To our relief, the European company expressed their ____ to co-operate with us.
| A．anxiety | B．concern |
| C．willingness | D．complaints |
In that south American country, _____bicycle is not_______ popular means of transportation．
| A．the；a | B．a；不填 | C．a：the | D．the；the |
The professor advised us to think outside the box and to________ new, different, or unusual solutions．
| A．put up with | B．come up with |
| C．keep up with | D．catch up with |
—Hi．Danny! Are you going for a picnic this weekend?
—I’m not sure._____________．
| A．It all depends | B．Yes．I’d like to |
| C．Sounds good | D．Sorry，I can’t |
________to give up smoking，he threw away his________ cigarettes．
| A．Determined；remained | B．Determined；remaining |
| C．Determining；remained | D．Determining；remaining |
It is because English is being widely used at present_________．
| A．why we learn it hard | B．that we learn it hard |
| C．which we must learn | D．when we should learn |