Teacher Training Vidoes is a great website that offers a lot of materials for teachers and learners. It not only does show useful sites for learning and teaching, but also shows how can you use them in a teaching context.
This website is called Ask Jeeves. It provides a full answer to your question. It other categories such as images and videos. It could be used in language classrooms where it helps students make questions.
Other fantastic sites for teachers that help them to make questions easily.
http://www.surveymonkey.com/
The problem with Survey Moneky is that this site is not free and it needs its user to subscribe.
It just offers thirty days as free trial.
http://hotpot.uvic.ca/index.php
HotPotatoes is an amazing website which provides teachers with a chance to create their quizzes easily and quickly and it helps them to create their own web-based quizzes. This software comprises of five applications which are JMix, JCrossJ,JQuiz,Cloze and JMatch. It has six main different types of basic exercises: close test, gap filling, sentence jumble, crossword, vocabulary matching and quizzes with a mixture of all exercises .