Question

they have donated many books to the library change the voice​

Answer 1

Explanation:

many books have been donated to the library by them

Answer 2

Answer :

Active : They have donated many books.

Passive : Many books have been donated by them.

________________________

Rules of voice :-

• To convert an active voice into passive voice, at first we have to figure out the subject and object.
• At first we have to put object of active voice as subject of active voice.
• Now we have to use perfect form of verb (P.P. form)
• Present tense → Present perfect tense.
• Past tense → Past perfect tense.
• Now we have to put prepositional by/other prepositions like to, with etc (With respect to object)
• Now we have to use subject of active voice as objective form in passive voice.

Examples :-

1. I read the book.

→ The book is read by me.

2. He gave that book to me.

→ The book was given to me by him.

3. He did the work.

→ The work was done by him.