I feel I must spare no efforts to do my

I feel I must spare no efforts to do my
bit.First,I decide to help plant more trees to make our city more
beautiful.Second,I should obey seven nos and be good at learning from
others.
我看了怎么这么别扭啊...总觉得不对...
帮忙看看哪里不对,可以的话再帮我改下,..