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1. Can you imagine how long it will be ________ a new drug is invented for AIDS? 2. I had no sooner gone into the classroom ________ the bell rang. 3. ________ he has made up his mind, nothing can change it. 4. He was in ________ a hurry ________ he forgot his keys. 5. I will go shopping ________ it doesn't rain this afternoon.

6. He failed again just ________ he didn't work hard at his lessons.

7. You need to practice quite a lot ________ your spoken English becomes excellent. 8. Karl Marx kept on studying English ________ he could use it freely. 9. Let's go out for a walk ________ you are too tired. 10. I have learned a lot of French ________ I came to Paris.

11. All the students stopped talking ________ I entered the classroom.

12. If you work with a strong will, you will overcome any difficulty, ________ great it is. 13. If we workhard, we can overcome any difficulty, ________ difficulty it is. 14. A new school was built ________ there had once been a wasteland.

15. ________ you've got such a golden chance, why not make the best of it? 16. A whole month had passed ________ she fully recovered.

17. I felt somewhat disappointed and was about to leave ______ something occurred that attracted my attention.

18. She thought I was talk about her son, ________ , in fact, I was talking about my son. 19. He did the experiment ________ he was told. 20. It will be years ________ we meet again. 21. It's ten years ________ I came to this town.

22. Go and get your coat. It's still ________ you left it.

23. This article is written in such easy English ________ all of us can read it.

24. I have kept that portrait ________ I can see it every day, as it always reminds me of my university days in London.

25. This is an illness that can result in total blindness ________ left untreated. 26. The question is ________ the film is worth seeing.

27. It has not been decided yet ________ the meeting will start at the hall.

28. He Was such a selfless person. ________ we gave him something to eat, he would save it up for his little sister.

29. The old lay felt lonely and she would tell the story to ________ passed by her house.

30. She was so interested in her book that she had read it for three hours ________ she realized it. 31. All the dished in this menu, ________ otherwise stated, will serve two to three persons. 32. ________ unemployment rate is high, it can be seen that crime rate there is also high. 33. John thinks it won't be long ________ he is.

34. Think it over carefully ________ you give me an answer. 35. ________ she grew older, she began to go deaf.

36. ________ he knew it the truck had hit onto his car, knocking it over. 37. Strange ________ it may seem, nobody got injured in the accident. 38. This is right the truth, ________ you believe it or not.

39. In five minutes, the police arrived ____ the case had happened and began their investigation. 40. ________ she comes to visit me, she brings a bunch of flowers for me.

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