提建议啊Dear Zhang ming I need your help.I don't konw how to stu

提建议啊
Dear Zhang ming
I need your help.I don't konw how to study English well.I like watching TV.But mum says I should spend more time studying instead of watching TV.And worse than that,I'm much heavier than before .I was sociable and outgoing before ,but now I'm shyer than others because all my friends are thinner than me.I don;t have self-confidence .But my mother likes me the way I am.
What should I do?Can you help me?
Yours
Mary
假设你是Zhang ming,是Mary的好朋友.阅读她的来信,给她一封回信,就她的烦恼提出合理的建议.
要求至少使用三种不同的提建议的句型；
可选用的句型,
1 If I were you ,I would...
2 I thank you should.../You shouldn't...
3 Why not .../ Why don't you...
4 You had better do...
5 You need to...