根据首字母提示完成句子。 1. If a friend o_____ you c
题型：填空题
问题：
根据首字母提示完成句子。
1. If a friend o_____ you cigarettes at a party, you can refuse.
2. It's h_____ for you to know a little about the illness.
3. We are looking for people who are k_____ about computer programs.
4. It's c_____ to speak to the old politely.
5. Most people are worried about the s_____ of the product.