1. They are taught vocabularies by Mr.Huynh. 2. Your homework should be done. 3. This house was built by Nam in 1999. 4. The letter was posted by Wind last month. 5. Her new restaurant will be opened next day. 6. The meeting had to be postponed by us because the boss was ill. 7. The window is cleaned by Hoa every week. 8. Service is included in this bill. (be included in : được bao gồm trong)