By the time he was twelve, Edison __________ to make a living by himself.
| A．would begin | B．has begun |
| C．had begun | D．was begun |
I’m sure that the teacher’s told you about the your result of the examination. ______ ?
| A．am not I | B．hasn’t he |
| C．aren’t you | D．isn’t he |
China has recently ______ its waters controls near the Diaoyu Islands to prevent Chinese fishing boats from ______ in the East China Sea．
| A．show up; attacking | B．taken up; having attacked |
| C．stepped up; being attacked | D．picked up; having been attacked |
The chairwoman had her office ______ during her absence, which she’d like to see ______ the following day.
| A．broken into; looked into | B．broken out; looking into |
| C．broken in; look into | D．broken off; to look into |
______ the meeting were the managers ______ each department of the company in Jiangsu province.
| A．Attend; in the charge of | B．Attending; take charge of |
| C．Being attended; taking charge of | D．Attending; in charge of |
The new government decided to encourage industries ______ technology, which was ______ biology.
| A．basing on; linked to | B．being based on; linking with |
| C．based on; linked with | D．to base on; linked |