1. How about going to see a movie? 2. Why don't we go to see a movie? 3. Why not go to see a movie? 4. Shall we go to see a movie? 5. What do you say to seeing a movie? 6. Let's go to see a movie. 7. Why don't you go to see a movie? ================ Are they all grammatical and the same? Are they all interchangable?
