Answer: B) The manager should send the invitation.
Explanation for this question is being written.
Answer: C) Must be followed.
Answer: B) Passive
Answer: C) Must be fixed.
Answer: C) Her work should be done on the computer.
Answer: A) Must be // (b) be cooked // (c) have been.
Answer: C) The concert might be cancelled.
Answer: B) Shouldn't be fed.
Answer: C) Be worn.
Answer: A) The car ought to be washed by you.
Answer: B) Must be done.
Answer: B) The car can be repaired.
Answer: B) Won't be allowed.
Answer: C) This picture must be sold.
Answer: D) Will not be allowed.
Answer: B) Cards might be played by us.
Answer: D) Be cleaned.
Answer: A) Ice cream may be served.
Answer: A) Is known.
Answer: C) Can be found.
Answer: B) The streets should be cleaned regularly.
Answer: A) Mustn't be + pp.
Answer: B) Passive voice.
Answer: A) Be stolen.
Answer: A) Must not be allowed.
Answer: C) May be considered.
Answer: B) Must be finished.
Answer: B) The rules may be forgotten quickly.
Answer: B) Is believed.
Answer: A) You can't be helped.
Answer: C) The window should be opened by you.
Answer: D) The school regulations must be followed by the students.
Answer: B) Delivered
Answer: D) The base form of the main verb.
Answer: D) A dozen of languages can be spoken by my new English teacher.
Answer: A) These computers can be used for free.
Answer: A) Were advised not to waste.
Answer: A) The game should be cancelled.
Answer: B) A song can't be written by a songwriter in twenty minutes.
Answer: C) The house must be cleaned.
Answer: A) Ving
Answer: D) Must be sent.
Answer: A) Modal verb + be + past participle + (by + agent).
Answer: A) Would the meeting be organized next week by them?
Answer: D) To be paid.
Answer: B) Jimmy might have been delayed by the traffic.
Answer: C) The supplies should be bought for this class by the teacher.
Answer: A) Should be erased.
Answer: C) May be given.
Answer: B) Be submitted.
Answer: B) The sentence could not be read by him.
Answer: A) Be submitted.
Answer: C) Must be conducted.
Answer: C) CELLPHONES CAN BE USED BY CHILDREN.
Answer: A) You can complete the report.
Answer: C) Be bought.
Answer: B) Can't see.
Answer: A) These exercises must be studied by Ali.
Answer: C) Their complaints should be sent to the boss.