Here you have some exercises about some grammar topics from units 3 and 4.
Articles: A / An / The / No Article
Exercise 1, Exercise 2, Exercise 3, Exercise 4, Exercise 5, Exercise 6.
Present Simple:
Exercise 1, Exercise 2, Exercise 3, Exercise 4, Exercise 5, Exercise 6, Exercise 7, Exercise 8, Exercise 9, Exercise 10, Exercise 11, Exercise 12, Exercise 13, Exercise 14, Exercise 15.
