1. Lan comes to class late very often. Lan is 2. Hung always leaves his books at home. Hung is 3. Trang always loses her key on the way home. Trang is 4. Using that ladder is very safe for us. It is 5. Living in this house is very convenient for my family. It is 6. Preventing students from littering is necessary. It is 7. Ms Hoa is talking to my teacher. The woman 8. The watch is 200 dollars. It was made in Japan. The watch 9. The man is my uncle. He wrote this poem. The man 10. Thinh is playing football in the schoolyard. The boy 11. We should recycle used glass to protect the environment. Used glass 12. We should follow these instructions carefully. These instructions 13. Lan will write some letters tomorrow. Some 14. My father waters the flowers every morning. The flowers 15. They speak a lot of languages in Canada. A lot 16. She works hard. She wants to have a better life for her kids. She works hard in 17. He learns Chinese very hard. He wants to work in China. He learns Chinese very hard so as 18. May I use your phone? Would you mind if Do you mind if 19. May I sit here? Would you mind Do you mind 20. Could you please turn down the radio? Would you mind