1. You have been travelling all day. You must be tired.
  2. That restuarant must be very good. It’s always full of people.
  3. That restuarant can’t be very good. It’s always empty.
  4. i’m sure i gave you the key. You must have it. Have you looked in your bag?
  5. I often see that women walking along this street. She must lIt raiive near here.
  6. It rained every day during their holiday, so they can’t have had a very ngnice time.