Answer the questions (ответьте на вопросы) 1)big ben is a boy, isn't he? 2)bus tickets are expensive, aren't they? 3)charing cross is near trafalgar square, isn't it? 4)buses is london often have no doors, do they? 5)the tower of london is very old, isn't it? 6)yon don't need a map in london, do you? 20