Let's work, just a little, with the first tenses we have learnt.

(exercises taken from perfectenglishgrammar.com)

Present Simple

Online exercises

To be exercises

https://www.perfect-english-grammar.com/present-simple-exercise-14.html

All verbs exercises (without "be")

https://www.perfect-english-grammar.com/present-simple-exercise-7.html

Extraordinary online exercises to practise

https://www.perfect-english-grammar.com/reported-speech-exercise-1.html

 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