Fluent Mind

For Writing you should use


1.Do not
2.Did not
3.Does not
4.Can not
5.May not
6.Shoud not
7.Could not
Etc

For speaking you should use

1.Don't
2.Didn't
3.Doesn't
4.Cann't
5.Mayn't
6.Shouldn't
7.Couldn't
Etc

For Reading and Listening these methods You must face.So you should mind it