Answer: B) Needs to spend.
Explanation for this question is being written.
Answer: C) Need not.
Answer: B) Needn't
Answer: B) Need to.
Answer: A) Didn't have.
Answer: D) Need to.
Answer: B) Don't have to.
Answer: A) Reserve
Answer: C) Need to do.
Answer: C) Need to.
Answer: B) Bring
Answer: A) Don't have to.
Answer: B) Need to communicate.
Answer: A) Don't need to.
Answer: A) Needn't
Answer: B) Needs to.
Answer: B) It's not necessary to tip in Vietnam.
Answer: C) Needn't
Answer: C) Don't have to.
Answer: A) Need to sleep.
Answer: B) Need
Answer: C) NEED TO.
Answer: C) Doesn't have to.
Answer: D) You don't have to wear a tie.
Answer: A) You need not bring money; it's free.
Answer: C) NEEDN'T
Answer: C) DOESN'T HAVE TO.
Answer: B) Needs
Answer: C) Didn't need to buy.
Answer: A) True
Answer: C) Necessity
Answer: A) Needs to.
Answer: A) Need not.
Answer: A) Doesn't have to.
Answer: C) You don't have to finish this work now.
Answer: A) Didn't need to get.
Answer: C) Don't / doesn't have to.
Answer: A) Need
Answer: C) Didn't have to.
Answer: B) DON'T