The computer system____suddently while he was searching for information on the Internet.
| A．broke down | B．broke out | C．broke up | D．broke in |
He got seriously ill when he was a baby. Later he couldn't see anything at all. He was blind.
| A．nearly |
| B．totally |
| C．especially |
| D．probably |
-What's happening in the new area?
-New houses _______ recently over there.
| A．are built |
| B．built |
| C．have built |
| D．have been built |
What _____ pity that you couldn't be there to receive prize!
| A．a; a |
| B．the;a |
| C．a;the |
| D．the;the |
Experiments of this kind ______in both the U. S. and Europe well before the Second World War.
| A．have conducted |
| B．have been conducted |
| C．had conducted |
| D．had been conducted |
I wasn't sure if he was really interested or if he ______ polite.
| A．was just being |
| B．will just be |
| C．had just been |
| D．would just be |