People are very _____ about the problems ____ the environment.
| A．concerning; concerned | B．concerning; concerning |
| C．concerned; concerned | D．concerned; concerning |
I don’t feel like ___ now.I’d prefer ___ my homework at present.
| A．to sleep ; doing | B．to sleep; to do | C．sleeping; doing | D．sleeping; to do |
---What ____ the population of China ?
---China has a population of 1.3 ____.
| A．is, billions | B．are; billions | C．is; billion | D．are; billion |
---I’m tired.Shall we find a chair ___ in the park? ----Good idea!
| A．to sit | B．to sit on | C．sitting | D．sit on |
This newspaper ___ twice a month.
| A．comes over | B．comes out | C．publishes | D．comes round |
He has ___ for two months and he hasn't ___ a job yet.
| A．lost his job….found | B．been out of work….found |
| C．been out of job… looked for | D．lost his work….seen |