Modal verbs

(first chart credits to know it info)

Online exercises (credits to perfect english grammar)

can, can't, could, couldn't

https://www.perfect-english-grammar.com/modal-verbs-of-ability-exercise-1.html

musn't, don't have to

https://www.perfect-english-grammar.com/modal-verbs-of-obligation-exercise-1.html

must, can't

https://www.perfect-english-grammar.com/modal-verbs-of-probability-exercise-2.html