Answer: C) Be sent.
Explanation for this question is being written.
Answer: A) Can be picked.
Answer: A) Could, be heard.
Answer: A) Shouldn't be taken.
Answer: A) True
Answer: B) Can be turned.
Answer: B) Would
Answer: A) The book must be returned by Friday at the latest.
Answer: C) Must be designed.
Answer: A) Must be made.
Answer: A) Can be filled out.
Answer: A) Be finished.
Answer: D) Should
Answer: C) Must be rejected.
Answer: A) The project must be finished by Friday.
Answer: D) Must
Answer: B) Must be done.
Answer: B) It's not permitted to offer.
Answer: D) The books must be returned by this friday.
Answer: A) Should be eaten.
Answer: B) Must be delivered.
Answer: A) Must be completed.
Answer: D) Must be conserved.
Answer: B) Might
Answer: A) Should be cleaned.
Answer: C) Must be done.
Answer: D) Mustn't be used.
Answer: D) They are always followed by an infinitive verb.
Answer: A) Allowed to-let.
Answer: A) CORRECT
Answer: D) Will surely get invited.
Answer: A) Must be washed.
Answer: D) Have to be repaired.
Answer: B) Must be repaired.
Answer: B) Was due to.
Answer: B) FALSE
Answer: C) Will
Answer: D) Must be sent.
Answer: C) Wasn't allowed to.
Answer: B) Can be made.
Answer: D) Must be signed.
Answer: B) Should be told.
Answer: B) Can be taught.
Answer: A) Must be followed.
Answer: C) Allowed to.
Answer: D) Will
Answer: B) May be asked.
Answer: D) Not to come.
Answer: B) To go.
Answer: C) Can be solved.
Answer: A) Modal verb+be+past participle.
Answer: A) Should be.
Answer: B) Are allowed.
Answer: A) YES
Answer: C) Won't be bought.
Answer: C) Is thought to be.