water will make the fish in the pond .
| A．Polluting; die away | B．Being polluted; die off |
| C．Polluted; die out | D．Pollution; die down |
He fell in love with the beautiful scenery at the first sight, and _________ it ever since.
| A．had never forgotten | B．didn’t forget | C．isn’t forgotten | D．has never forgotten |
It is reported that two schools, ________ are being built in my hometown, will open next year.
| A．they both | B．which both | C．both of them | D．both of which |
Was it in the factory _____ you worked five years ago ____ you met your wife for the first time?
| A．that; that | B．where; that | C．which; where | D．which; that |
I was about to give up my effort to solve a problem __________ a good idea struck me.
| A．when | B．while | C．until | D．before |
When someone gets old they often go to live in a home with other old people ________ there are nurses to look after them.
| A．although | B．that | C．where | D．unless |