Not until all the fish died in the lake __________ how serious the pollution was.
| A．did the villagers realize | B．the villagers realized |
| C．realized the villagers | D．do the villagers realize |
35. Don’t sit _____the corner of the desk. That’s impolite for a student.
| A．on | B．in | C．to | D．At |
34. Her clothes are very bright _____ colour.
| A．of | B．in | C．on | D．With |
33. The little boy is very clever _____ every subject.
| A．at | B．in | C．about | D．On |
32. When the Chinese delegation arrived at Vienna airport, they were received _____ cheers.
| A．in | B．for | C．on | D．With |
31. Einstein didn’t care for money. Once he used a check _____ $1000 as a bookmark and then he lost it.
| A．for | B．of | C．about | D．To |