Was it through Mary, _____ was working at a high school, ____ you got to know Tom?
| A．who; who | B．that; which | C．who; that | D．who; which |
Space exploration has been made __________ with the development of modern science and technology.
| A．it possible | B．it was possible | C．that possible | D．possible |
---How much is the T-shirt___________?
--- 65 dollars.
| A．worth | B．cost | C．worthy | D．paid |
Before leaving home, make sure to turn off the electricity, lock the door, ________ the windows open.
| A．and not to leave | B．instead of leaving | C．rather than leave | D．and not leave |
We are so busy that no one in the office can be __________ from any other work.
| A．drawn | B．pulled | C．spared | D．saved |
About 698,000 laptops were sold in China in _ second quarter,12.1 % increase from a year ago.
| A．a； a | B．the； a | C．the；the | D．a； the |