I find it hard because of the kanji mistakes in it, too!
How did you copy those onto here?
1. The phone rang in the teachers' room just now.
2. That's the kid who jumped (from someplace)!
3. (Someone) called the school saying he had something he wanted to apologize for.
4. You shouldn't overwork yourself. (You should take it easy.)
5. We tried to persuade (someone) but he insisted that he had something that he had to discuss.