a.try(not) to do...b.why don’t you =why not?c.I think ,you s

a.I try to overcome the trouble/change myself/be a good student.我试图 克服困难/改变自己/成为一名好学生.
b.Why not come here/go to school/write to me?（你）为什么不 过来/去上学/写信给我?
c.I think,you should wok hard /get up early/apply to me.我认为你应该努力学习/早起/向我道歉.