根据首字母或中文提示写出正确单词。

1. I would be g_____ if you could give me some advice.

2. The young man i_____ his own safety and jumped into the river to save the boy.

3. It really feels good to sleep o_____ on a summer night.

4. This publishing firm is planning a new s_____ of school textbooks.

5. The young man offered to help the old lady with her_____ (手提箱).

6. If the _____ (情况) had been different, their plan might have succeeded.

7. It is the custom there to give _____ (小费) to whoever serves you.

8. The lazy child was punished by his teacher for _____ (作弊) in the exam.