Mustn't - English Grammar

  Write  mustn't. The verb follows.
 Susan to phone her friend. ( to forget)
 He sad. (to be)
 Jack and Peter, we have a lot of time. We (ro hurry).
 The pupils school before 1.30 a. m. (to leave)
 You Tim what happend. Never! (to tell)
 They the bus. They have no ticket. (to take)