Составьте предлжении по языку. с этих слов-to know,vocabulary,difficult,paper,stick. 1

1) I was curious to know why people had been staring at me.
2) Vocabulary - the body of words used in a particular language.
3) This example is very difficult. Help me please.
4) I know how to make paper airplanes.
5) I like draw in the sand with a stick.