单词拼写。根据所给汉语或首字母写出空缺处单词的正确形式，使句子意思完整

1. He kept on saying really _____(刻薄的) things to hurt me.

2. I'm too busy now, o_____ I would help you do the work.

3. Doctors have been _____(研究) what effect stand-up and other forms of comedy have on us.

4. SangLan had been a successful g____ before she was injured in an accident.

5. This will have a _____(持久的) effect upon the number of fish left for us to eat.

6. Would anyone say that economic development should be stopped in f____ of nature?

7. You seem to have _____(忽略) some important details in your report.

8. Girls who have been asked can usually answer the questions without h____.

9. _____(同时), in the rest of the city shelter and access to food and clean water are big problems.

10. In Italy, the newly-weds are e_____ to give their guests presents as a souvenir to remember the big day.