翻译句子。
1. 你不在时他们表现很不好。
They _________________ when you were not here.
2. 我认为垃圾食品不仅仅有害健康。
I think _________________ bad for our health.
3. 今天早上我撞上了我的班主任。
I _________________ my head teacher this morning.
4. 最后妈妈说服我去上学。
In the end, my mother _________________ go to school.
5. 暑假过后，我增重很多。
I've _______________ after the summer holiday.