Answer: A) Study
Explanation for this question is being written.
Answer: B) Are not allowed.
Answer: C) Had better.
Answer: A) Like
Answer: B) Need
Answer: D) Finish
Answer: B) Lets
Answer: B) To visit.
Answer: B) Weren't able to.
Answer: C) Think
Answer: C) Had better not.
Answer: C) Had better take.
Answer: B) You had better get permission before filming in the museum.
Answer: A) Had better borrow.
Answer: A) Had better.
Answer: B) Leave
Answer: D) Mustn't
Answer: A) Recommended or expedient behavior.
Answer: C) Are able to.
Answer: B) Can't stand.
Answer: B) Wish
Answer: C) Let/play
Answer: B) Don't
Answer: A) Let him say.
Answer: C) A strong piece of advice / what should be done.
Answer: B) To tell.
Answer: A) Is going to watch.
Answer: C) 'd better be.
Answer: C) 'm supposed to.
Answer: C) You had better answer it.
Answer: B) Had better.
Answer: B) Was supposed to.
Answer: C) Aren't allowed.
Answer: D) Wasn't able to.
Answer: A) Expect
Answer: A) Hope not.
Answer: A) Did not manage to find.
Answer: A) To see.
Answer: A) Had better not.
Answer: C) We don't conjugate them, except if they are semi-modals.
Answer: C) Were supposed to meet.
Answer: C) Had better not go to bed late.
Answer: C) Don't
Answer: A) Who is supposed to clean this classroom?
Answer: B) Is allowed to.
Answer: C) Let
Answer: C) Bet
Answer: B) Bound to.
Answer: A) Dare
Answer: D) Ought to.