1. Exercise 1: (Grammar)http://first-english.org/english_learning/english_beginners/can_can_t_exercises/02_can_english_grammar_exercise.htm

2. Exercise 2: (Affirmative and Negative)http://first-english.org/english_learning/english_beginners/can_can_t_exercises/04_can_can_t_negative_exercise.htm

3. Exercise 3: (Negative)http://first-english.org/english_learning/english_beginners/can_can_t_exercises/03_can_english_grammar_exercises.htm

4. Exercise 4: (Questions)http://first-english.org/english_learning/english_beginners/can_can_t_exercises/04_can_can_t_negative_exercise.htm

5. Exercise 5: (Mixed)http://first-english.org/english_learning/english_beginners/can_can_t_exercises

/09_can_mixed_exercises_learning.htm

https://learnenglishkids.britishcouncil.org/es/grammar-games/modals-can-and-cant