题目内容：

1..My brother a__________ a knowledge of computers by careful study. 

2..Can you tell me a________ of time if you’re coming?

3..I a_________ of your trying to earn some money, but please don’t neglect your studies.

4..They a_________ the value of the house at over $250,000.

5..I’m d__________ to hear of your success.

6..When you find someone hurt, you should perform first a___as soon as possible.

7.. Why do you value money so much? Is it e__________ to happiness?

8..The d_________ air in the room will make food go bad easily.

9.. He has gone to the hospital for special t___________ because of his high fever.

10...Remember to cover the burned area with a dry and clean b_________.