The computer was used in teaching. As a result，not only _____，but students became more interested in the lessons.
| A．saved was teachers’ energy | B．was teachers’ energy saved |
| C．teachers’ energy was saved | D．was saved teachers’ energy |
As a new graduate, he doesn’t knowit takes to start a business here.
| A．how | B．what | C．when | D．which |
. (2010·江西名校模拟) —I’ve heard they went skiing in the mountains last winter.
—It ______ true because there was so little snow there then.
| A．may not be | B．won’t be | C．couldn’t be | D．mustn’t be |
The tomato juice left brown ____ on the front of my jacket．
| A．spots | B．points | C．tracks | D．traces |
Most of the professors _____ to our school were from South Africa．
| A．invited | B．to be invited | C．being invited | D．had been invited |
—Alice, you look puzzled．Haven’t you understood it?
—Yes．I _____of another problem just now．
| A．had thought | B．have thought | C．thought | D．was thinking |