用所给动词的正确形式填空.

1. Jack decided _____ (work) hard this term.

2. When he arrived at home, it began _____ ( rain).

3. Can you _____ (work) out your math problem?

4. They must _____ (surprise) to see the dirty room.

5. Stop _____ (walk), let's have a rest.

人身轻伤是指休息（）个工作日以上的人身伤害。