IV.Complete the sentences with the passive form of the verbs in brackets. 1. My shirts by my mother when I enter the room. (iron) 2. The police appeared while a young man by two hooligans. (beat) 3. The letter by the secretary at 9.00 yesterday. (write) 4. The trees by the kids at the moment. (water) 5. Look! The big truck by the customs officer. (check) 6. by the police car now. (follow) 7. Paper by the Chinese many year ago. (invent) 8. The conference due to the president's absence yesterday. (not, hold) 9. I a piece of advice by my mother every day. (give) 10. The Internet all over the world. (use) 11. Laura to go out after 10 p.m. (not, allow) 12. They by their teacher every day because of their laziness. (punish) 13. by the doctor yearly? (examine) 14. All the rooms in my house before Tet holiday last month. (decorate) 15. The exam papers by the teacher this morning. (mark)