题目：
用所给词的适当形式填空。
1. His father worked for thirty hours without _____(stop) .
2. It was a temporary _____ (peaceful),and an other war soon broke out.
3. Lei Feng is well-known for _____ (help) other people.
4. His grandmother _____ (bury) in his home-town, Shandong Province.
5. The doctors decided to _____ (operation)on his mother at once.
答案：
l. stopping 2. peace 3. helping 4. was buried 5. operate
