______ by a greater demand of vegetables, farmers have built more green houses.
| A．Driven | B．Being driven | C．To drive | D．Having driven |
The chairman_________all the people to continue to deal with the global financial crisis.
| A．called up | B．called in | C．called for | D．called on |
_________in the city for thirty years, the old man moved back to the countryside.
| A．Having worked | B．Working | C．To have worked | D．To work |
So serious ________ that even the best doctors failed to save his life.
| A．the man was injured | B．was the man injured |
| C．the man is injured | D．is the man injured |
．Those are model teachers, most of_________ are young women.
| A．that | B．who | C．whom | D．whose |
．— May I help you?
— Yes, I'd like to try on some sports jackets just like_________ I'm wearing.
| A．it | B．this | C．the one | D．that |