Помогите составить предложения, со словами: 1.To be good at2.To be bad at3.To be carefull with4.To be careliess…

I like Maths and think that I'm good in it.I'm bad at Chemistry becauseI can't understand it.I'm careful with strangers because I don't know them well.I'm careless with my stuff but I want to change it.I'm keen on animals and everything about them! I'm enthusiastic about studying because I like to get new knowledge every day.