Who, what, where, when, why, and how…are all question words. You need these question words in order to ask questions. Sometimes people who are just learning how to speak English get confused on which question words to use and when to use them in order to ask certain questions. “Where are we going?” and “When are we going?” are two completely different questions that will get you two completely different responses, so it is very important that you understand the differences between these question words and others. The link below will help you understand question words better and the exercises will allow you to practice your understanding of these important words.