America is tough.
The sentence is too general to be of much use to a reader. What part of America is tough? Specifically, how is America tough? What makes it that way? Details always help to reduce the breadth of a sentence.
its horrible and hard
This is an overly broad and vague question.
Overly broad references
an exclamatory sentence is a sencence with an exclamation mark at the end or an overly exciting sentence
That is an overly broad question, covering every answer in this category and many more.
Howard Gardner
Example: The man has broad shoulders.
falling intonation
The plank was ten times as long as it was broad.
I think this is an overly broad question that requires some context. There are several ways I can think of to interpret the question.
too broad
She is not overly beautiful, nor ugly- just plain Jane.