______ nice, the food was all eaten up soon.
| A．Tasting | B．Taste |
| C．Tasted | D．To taste |
— Are you still thinking about yesterday’s game?
— Oh, that’s ____________.
| A．what makes me feel excited | B．whatever I feel excited about |
| C．how I feel about it | D．when I feel excited |
______ made the school proud was ______ more that 90% of the students had been admitted to key universities.
| A．What…because | B．What…that | C．That…what | D．That…because |
There is a new problem involved in the popularity of private cars _______ road conditions need _______.
| A．that; to be improved | B．which; to be improved | C．where; improving | D．when; improving |
It is pretty well understood __________controls the flow of carbon dioxide in and out the atmosphere today.
| A．that | B．when | C．what | D．how |
____is certain is ___prevention is more important than treatment .
A．It;that  |
B．What;that | C．As;what | D．What;what |