按首字母或所给中文填上正确的单词形式。

1. He showed his _________ (贫穷；缺乏) in his knowledge of agriculture.

2. They predict that a large earthquake will ________ (袭击) the east coast before the end of the decade.

3. These factories are releasing toxic gases into the ________ (大气层).

4. We're in the building ________ (对面) the government offices.

5. It was just ________ (不幸) that he phoned exactly as our guests were arriving.

6. Naturally we were ________ (担忧) for him when we heard of the accident.

7. All c______________, no matter how small, will be much appreciated.

8. There were altogether 16 villagers lost in the v_________ storm.

9. Training is provided, so no ________ (之前) experience is required for the job.

10. New companies often e_____________ a loss in their first few years.