Chuyển đổi các câu sau sang câu gián tiếp: 1) Mary said to John, “ I cannot go to the movie with you tomorrow.”, 2) “ I saw her this morning”, he said, 3) Some people say, “ love is the hardest lesson.”, 4) Mary said, “ I like oranges better than bananas.”, 5) The boss said, “ You needn’t do these things .'', 6)   The boy said, “ I can’t do this.”