Change into passive voice

----- Nội dung dịch tự động từ ảnh -----
1. They/ learn English/ four years/.
2. Would/ if I/ take/ photos? – Yes, please.
3. You/ ever/ visit/ Ha Long Bay?
4. Would/ you/ mind/ open/ the door? – I'm sony I can't.
VI. Change into passive voice. (1m)
1. He breaks the glass into small pieces.
- The glass is .
2. The students clean the school yard everyday.
--> The school yard is