chuyển sang câu bị động ạ -0. Who are they keeping in the kitchen? 1. How can they open this safe? 2. What books are people reading this year? 3. How did the police find the lost man? 4. Who look after the children for you? 5 . How long have they waited for the doctor? -6. What time can the boys hand in their papers? 7. Who lend you this book? 8. How many marks does the teacher give you?

1. How can this safe be opened?
- This safe can be opened with a special key.

2. What books are being read this year?
- This year, people are reading a variety of books.

3. How was the lost man found by the police?
- The lost man was found by the police through a tip from a witness.

4. By whom are the children looked after?
- The children are looked after by a babysitter.

5. How long has the doctor been waited for?
- The doctor has been waited for by them for over an hour.

6. At what time can the papers be handed in by the boys?
- The papers can be handed in by the boys at 4 pm.

7. By whom was this book lent to you?
- This book was lent to me by my friend.

8. How many marks are given to you by the teacher?
- The teacher gives me 85 marks out of 100.