Subject and object questions.

http://www.esl-lounge.com/student/grammar/3g26-subject-object-questions.php


http://www.perfect-english-grammar.com/subject-questions-exercise-1.html

https://learnenglish.britishcouncil.org/en/grammar-exercises/question-forms-subjectobject-questions

http://www.englishexercises.org/makeagame/viewgame.asp?id=719