Answer: C) Were feared to have died.
Explanation for this question is being written.
Answer: C) Attacked by a lion.
Answer: D) My wallet must have been taken.
Answer: B) Passive
Answer: C) The form must be filled in by him.
Answer: A) Can be built.
Answer: B) It could be done by her.
Answer: A) Bread need not be bought by them.
Answer: A) The problem can be solved easily.
Answer: A) Must be repaired.
Answer: A) The work must be done today.
Answer: B) The lessons should be studied repeatedly.
Answer: B) Susy won't be seen by him.
Answer: A) Corrected
Answer: B) Should be followed.
Answer: B) The plants should be watered every day by her.
Answer: A) Is thought.
Answer: A) Our children should be protected from bad effects of violent from films shown on TV.
Answer: A) By publishers.
Answer: D) The environment must be protected.
Answer: B) English dictionaries would be bought by the students last week.
Answer: B) Cannot be grown.
Answer: A) Be done.
Answer: B) The question can be answered by you.
Answer: B) Be used-with.
Answer: B) Must be prepared.
Answer: B) The letters have to be delivered.
Answer: B) Can be made.
Answer: B) Passive Voice.
Answer: A) CAN BE TURNED.
Answer: C) Should be done.
Answer: A) Active
Answer: C) Must be taken.
Answer: A) Is believed.
Answer: A) The rules must be followed.
Answer: B) The work must be finished by 5 PM.
Answer: C) The bones should be brought by the dog.
Answer: A) P
Answer: A) Should be done.
Answer: C) Would be visited.
Answer: A) The puzzle could be solved.
Answer: A) It is hoped that the match will be won by us.
Answer: A) The library books must be returned by the children on time.
Answer: C) The room must be cleaned by you.
Answer: D) The sentence above can be change to be passive because it has a transitive verb.
Answer: B) I can be reached at the number below.
Answer: B) Jagga cannot be caught.
Answer: A) The problem can be solved by him.
Answer: B) This exercise must be done in class by the students.
Answer: A) A cake must be made.
Answer: C) Could the package be delivered tomorrow by them?
Answer: B) The problem could be easily solved by them.
Answer: B) This door mustn't be opened.
Answer: C) Jimmy might have been delayed by traffic.
Answer: B) Football can be played by the girls.
Answer: B) Can't be predicted.
Answer: C) His medications might be taken by him.
Answer: A) Need