Structure of questions with am/is/are

Yes/no questions with am/is/are
http://www.eclecticenglish.com/grammar/PresentSimpleToBe1C.html

Put the words in order to make questions:
http://www.englisch-hilfen.de/en/exercises/questions/be.htm


Information questions with verb to be

http://www.englisch-hilfen.de/en/exercises/questions/be2.htm