Answer: C) Must
Explanation for this question is being written.
Answer: B) Mustn't
Answer: A) Must
Answer: B) Must
Answer: B) You must exercise at least three times a week.
Answer: D) Must
Answer: A) MUST
Answer: A) Must try.
Answer: C) Must not.
Answer: D) Mustn't
Answer: A) Mustn't
Answer: B) Mustn't smoke.
Answer: B) Must not.
Answer: A) Must + verb.
Answer: A) It is essential that you leave leave by 5 p.m.
Answer: D) Must not.
Answer: C) Children from 5 in Britain must attend classes.
Answer: C) You must not drive if you don't have a car licence.
Answer: C) Finish
Answer: A) That which proceeds from the will of the speaker.
Answer: B) Have written permission from the owner.
Answer: C) Are to meet.
Answer: B) Don't have to.
Answer: D) Indicating a strong obligation or necessity.