She was so angry at he was doing she walked out, and closed the door heavily behind her.
| A．what, that | B．that, what | C．that, that | D．what, what |
Great changes __ in the city in the past 20 years, and a lot of factories ____.
| A．have been taken place; have been set up |
| B．have taken place; have set up |
| C．have taken place; have been set up |
| D．were taken place; were set up |
—Mr. Smith has decided to his bad habit of smoking.
—That’s good news. I hope he can do it.
| A．set up | B．clean up | C．give up | D．save up |
When I dropped in, Dr Smith _____, so we only had time for a few words.
| A．just left | B．was just leaving |
| C．has just left | D．had just left |
The chemical factory is far away in the mountains. It is nearly ____ ride from the city.
| A．a six-hour | B．a six hour’s | C．six hour’s | D．six hour |