Choose the right word (what, where, when, who, why, how, whose, which) to make the statements complete.
1. No matter ... long it takes I'm going to finish this picture.
2. No matter ... we are going to meet we shall meet at six, 3. No matter ... said it he is not quite right. 4. No matter ... you may think we are going to do it our own way. 5. No matter ... of you wrote that postcard he made a lot of mistakes. 6. No matter ... dog it is you should feed it. 7. No matter ... he returns we shall discuss it with him. 8. No matter ... you have decided to do it, it's your decision and I will obey.