| 1. 难度：中等 | |
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Hold on to your dream, ________ you might regret some day. A.and B.or C.but D.so
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| 2. 难度：简单 | |
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Going to the movies is good, ______ I really only like listening to music. A.and B.but C.so D.or
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| 3. 难度：中等 | |
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Smile to the world, ________ the world will smile back to you. A.nor B.but C.or D.and
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| 4. 难度：简单 | |
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There are only 30 minutes left, ________ we'd better take a taxi. A.for B.or C.but D.so
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| 5. 难度：中等 | |
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________ my sister ________ I do well in our lessons. My mother is very proud of us. A.Not；but B.Neither；nor C.Either；or D.Both；and
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| 6. 难度：中等 | |
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______ Lucy ______ you can go to the party. One of you has to stay at home to look after your grandma. A.Neither; nor B.Either; or C.Not only; but also D.Both; and
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| 7. 难度：简单 | |
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(2016河北30题)Victoria, hurry up! ________ we can't arrive there on time. A.Or B.So C.But D.And
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| 8. 难度：中等 | |
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(2014河北32题)Diana isn't here, ________ leave a message on her desk. A.or B.so C.and D.but
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| 9. 难度：中等 | |
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The beginning of the movie was boring, the end was amazing! A.but B.and C.so D.or
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| 10. 难度：中等 | |
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(2017河北78题)My friends ________ I often go to the Science Club together.(盲填)
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| 11. 难度：中等 | |
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You'd better be careful with the stick, ________ you will hurt yourself. A.so B.but C.or D.and
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| 12. 难度：中等 | |
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Help others in need, ________ they will help you when you are in trouble. A.and B.but C.or D.nor
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| 13. 难度：中等 | |
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Tony used to be a quiet student, ________ now he is active in class. A.so B.and C.but D.or
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| 14. 难度：中等 | |
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My arm is still painful, I'm going to see a doctor. A.so B.for C.but D.or
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| 15. 难度：中等 | |
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You can either email us ________ come to our office for your questions.
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| 16. 难度：中等 | |
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Be more careful and more patient, ________ you will make fewer mistakes in the following experiments.
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| 17. 难度：中等 | |
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Bob, dinner is ready. Please wash your hands ________ you eat. A.until B.after C.while D.before
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| 18. 难度：简单 | |
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(2017河北34题)Mom won't let Dick go out ________ he promises to be back by 10：00 tonight. A.if B.when C.since D.unless
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| 19. 难度：中等 | |
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Eric arrived on time, _______ it was the rush hour. A. though B. because C. while D. unless
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| 20. 难度：中等 | |
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Our world will get better and better each of us lives a greener life. A.before B.if C.though D.until
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| 21. 难度：中等 | |
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My father was preparing for his speech __ my mother was doing some washing last night. A.if B.while C.unless D.until
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| 22. 难度：中等 | |
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I didn't know the news ________ you told me. Thank you for telling me that. A.because B.though C.until D.while
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| 23. 难度：中等 | |
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He kept going on his trip ________ he was very hungry and thirsty in the desert. A.although B.whether C.unless D.as
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| 24. 难度：简单 | |
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Mr. Black walked around and offered help ________ we were doing an experiment. A.although B.when C.until D.unless
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| 25. 难度：中等 | |
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It’s hard for us to say goodbye we have so many happy days to remember. A.so B.because C.although D.until
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