Number 7:falling tone.Number1:Used in declarative sentences. I have already read that book. That street is two miles long.
Number 2:Used in special questions. What has happened to him? Which direction is it to the post office. Rising tone is used in special questions to ask for repation. What is your major? Where shall we go for the holiday? Number 3:Used in imperative sentences. Go back to your seat! Please do not hesitate to contact me. Number 4:Used in exclamatory sentences. What a small world! Oh! My poor Mathilde, how you've changed!