Although there is no life on Mars now , some scientists think that there some form of life a long time ago .
| A．must be | B．may have been | C．can have been | D．could be |
I soon found that the work I was doing had al-ready been done by someone else. __________，I was wasting my time.
| A．In particular |
| B．All in all |
| C．In other words |
| D．After all |
With the development of economy, even people in remote villages can have __________ to computers.
| A．possibility |
| B．entrance |
| C．independence |
| D．access |
In my opinion, a short stay in the country for some time will be __________ to her health.
| A．available |
| B．accessible |
| C．beneficial |
| D．especial |
George went to find the house for a week, but he still didn't find a room __________.
| A．to live |
| B．for living |
| C．to live in |
| D．live in |
—What made you so __________？
—John's not listening to my advice.
| A．annoy |
| B．annoying |
| C．to annoy |
| D．annoyed |