13. She often (spend)______a lot of money. She (spend)_________a lot of money since i (know)________her 14. Lan never (break)________anything but her brother John (break)___________several glasses since i (know)_________. Yesterday he (break)_________my favorite glass 15. When I came in, the lesson________(teach) 16. I suggest ________camping (go) 17. This work needs________on time (finish) 18. Please remember (turn)__________off the radio before you go out 19. I can't stand (travel)___________by underground 20. He (fall)_________asleep while he was watching TV 21. We (know)_________each other since we were students 22. It's difficult for me to________(sleep) at night 23. Your car ought to__________(wash) carefully

A large number of fishermen_______ when the storm struck. (kill) 2. He is often interested in________question (ask) 3. If you don't understand the lesson, I__ __ again to you (explain). 4. Mai________( buy) a new dress yesterday but she ______ it yet (not wear). 5. Gold (discover)________ in California in the 19th century. 6. I wish they (be)____ ___ here next time 7. How many times (you,see)_______nim since he (move)_______Edimburgh? 8. The computer (use)_______every day 9. She (take)_______to the concert by Brown yesterday 10. The exercise (not finish)________yet 11. My friends (never see)__________the famous cave Phong Nha 12. You always (make)__________mistakes. You (make)_________several mistakes since yesterday - You (make)________a very bad impression last night 13. She often (spend)______a lot of money. She (spend)_________a lot of money since i (know)________her 14. Lan never (break)________anything but her brother John (break)___________several glasses since i (know)_________. Yesterday he (break)_________my favorite glass