8. Our class ought to. .dlean) the beach to protect the environment. 9. look! the Sun...is rising...(rise). 10. Have you ever...gone. .(go) to London? 11. While I. ..(watch) TV, My father. .(read) at the monent. 12. She is lietening to music when He. .(return) from Hanoi. 13. They .. . (do) homework at 8 o'clock yesterday. 14. Nam is always. .(sleep) on class. 15. We... .....(eat) nooodles when he... --(drink) at 5 o'clock yester day. 17. Has she ever..(need) her friends' helping? 18. Lan must.. -(attend) on this club. 19. He.... -(practice) English for three months. 20. They. .(iron) clothers since last Monday. Page: 2 of 2 Words: 361 English (U.S.) 目 Tổ chuyên môn đang trìn... •..