Grammatica

1. Questions:

https://www.englisch-hilfen.de/en/exercises/questions/mistakes.htm

https://www.englisch-hilfen.de/en/exercises/questions/simple_present.htm


https://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-97992.php 

https://www.ego4u.com/en/cram-up/grammar/simple-present/form/exercises?04

2. Negatives:

https://www.englishgrammar.org/negatives-exercise/

https://learnenglish.britishcouncil.org/english-grammar/questions-and-negatives

https://www.englisch-hilfen.de/en/exercises/tenses/negation.htm


https://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-13236.php