6th grade A

CAN- CAN'T

http://www.agendaweb.org/exercises/verbs/can/affirmative-negative

http://www.agendaweb.org/exercises/verbs/can/can-cant

http://www.agendaweb.org/exercises/verbs/can/present.htm

http://www.englishexercises.org/makeagame/viewgame.asp?id=5488

https://www.ecenglish.com/learnenglish/lessons/can-or-cant

https://learnenglishkids.britishcouncil.org/en/grammar-practice/modals-can-and-cant

http://www.myenglishpages.com/site_php_files/grammar-exercise-can-can't.php

http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-61379.php

http://www.englishexercises.org/makeagame/viewgame.asp?id=1518