6. These clothes used to be worn by her when she was 10 years old.
7. Milk is used to make butter and cheese.
10. Some pictures were taken away by the boys who broke the window. (Câu này mình không chắc lắm nhé)
11. Ten emails have been written by my friend for 2 hours.
12. How is this word pronounced?
13. Is your house being painted by Mr Nam at the moment?
14. He hasn't been seen for ages.
15. How many languages are spoken in the USA?