https://quizlet.com/433958739/simple-compound-and-complex-sentences-flash-cards/
https://quizlet.com/353114653/find-the-subject-and-the-verb-flash-cards/
https://quizlet.com/352211027/find-the-subject-flash-cards/
https://quizlet.com/353113001/find-the-verb-flash-cards/
https://www.quia.com/quiz/2922118.html