1. I learn or review the course

Watch the following video before doing the exercises. It will remind you the basis of asking questions. Don't hesitate to watch it full size.

 

2. NOW PRACTISE Go to https://www.english-4u.de/en/grammar-exercises/question-words4.htm

More exercises : https://fog.ccsf.edu/~mbibliow/whquestions3-3.html