Answer: D) Doesn't have to.
Explanation for this question is being written.
Answer: A) Don't
Answer: A) Doesn't have to.
Answer: A) This is not necessary.
Answer: C) People can participate however much they want.
Answer: A) Have to.
Answer: C) Don't have to.
Answer: D) Have to.
Answer: B) Don't have to.
Answer: B) HAVE TO.
Answer: B) Present
Answer: B) Does / have to.
Answer: C) He had to answer her.
Answer: C) Have to.
Answer: C) Didn't have to.
Answer: A) I have to take notes.
Answer: A) Lack of obligation.
Answer: A) To buy me a present.
Answer: A) Don't have to.
Answer: C) Won't have to.
Answer: D) Don't have to.
Answer: B) Don't have to take.
Answer: B) False
Answer: B) Have
Answer: A) Have to, don't have to.
Answer: A) I have to finish my homework.
Answer: A) Had to.
Answer: B) Does it have to make him rich?
Answer: A) Have
Answer: B) Doesn't have to.
Answer: D) Has to.