Answer: A) Must not.
Explanation for this question is being written.
Answer: B) Must
Answer: D) Mustn't
Answer: B) False
Answer: A) Study
Answer: C) Must keep.
Answer: C) Mustn't
Answer: A) Correct
Answer: D) Must not.
Answer: A) Must
Answer: E) Must
Answer: A) Mustn't
Answer: C) Must
Answer: B) Mustn't
Answer: B) Must not.
Answer: A) Necessity
Answer: C) Mustn't lose.
Answer: C) MUST
Answer: A) Pay
Answer: B) Help
Answer: A) Has to.
Answer: A) Voluntary
Answer: B) MUST
Answer: C) Musn't
Answer: D) Take
Answer: B) Must wear.