Answer: B) Must
Explanation for this question is being written.
Answer: A) Must not.
Answer: C) Mustn't
Answer: A) Must
Answer: A) Mustn't
Answer: A) Prohibition or obligation.
Answer: B) Mustn't
Answer: A) Yes
Answer: A) Do not talk back to your parents.
Answer: D) Must be paid.
Answer: A) True
Answer: C) Must
Answer: B) Mustn't let.
Answer: D) Must
Answer: B) Musn't
Answer: A) Mustn't she.
Answer: A) You mustn't talk during the exam.
Answer: A) You must be careful.
Answer: B) You are not allowed to do something.
Answer: A) Is supposed to.
Answer: A) You mustn't use your mobile phone in the examination room.
Answer: C) Don't have to.
Answer: A) You mustn't go.
Answer: D) Mustn't
Answer: B) Must be.
Answer: D) D must.