Turn these sentences into the passive voice:

cứu
----- Nội dung dịch tự động từ ảnh -----
Turn these sentences into the passive voice:
1. The chief engineer was instructing all the workers.
<=
2. They will hold the meeting before May Day.
=>
3. The boys broke the window and took away some pictures.
<=
4. Mary doesn't speak Vietnamese.
<=
5. The teacher explains the lesson carefully.
=>.
6. Mrs. Green is cooking the food in the kitchen.
<=
7. The doctor examined the patients.
<=
8. These boys made that noise.
=>
9. The mechanic is repairing Judy's car.
10. They were cleaning the floor when I arrived.