www.bradleys-english-school.com/online/MultipleChoice/whquestion.html
www.aula21.net/segunda/juandiaz/ejercicio8.htm
www.eflclub.com/1quizzes/hello/hello.htm
https://www.isabelperez.com/q-a-easy.htm
www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-7226.php
https://www.englishexercises.org/makeagame/viewgame.asp?id=8033