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.
