Lesson D past simple regular and irregular. Lesson D past simple regular and irregular. Lesson A (past simple regular and irregular 1) Lesson A (past simple regular and irregular 2) Past Simple Exercise 4. Past Simple Exercise 5. Past Simple Exercise 6. Past Simple Exercise 7. Past Simple Exercise 8. Past Simple Exercise 9. Past Simple Exercise 10. Irregular verbs. Past simple. Past simple. Past simple. Past simple.