Neither,Either, so, too

1. https://www.grammarbank.com/so-neither-either-too-exercise.html 

2. https://www.learnenglishfeelgood.com/esl-too-either-neither1.html

3. https://www.test-english.com/grammar-points/a2/so-neither/

4. https://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-58137.php

5. https://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-49198.php

Time clauses

Watch the video to undestand first: https://www.youtube.com/watch?v=d7qOWm65nUo

OR see the explanation: http://www.englishlessonsbrighton.co.uk/time-clauses-explanation-rules-exercise/

http://wwwedu.ge.ch/cptic/prospective/projets/anglais/exercises/time1.htm

https://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-13727.php

http://www.focus.olsztyn.pl/en-english-grammar-time-clauses-exercises.html#.WzJfLFMvzq0