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42. A. Worse still      B. After all           C. What's more        D. At last

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41. A. since           B. after              C. while                 D. before

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40. A. across         B. through           C. beneath           D. beyond

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39. A. shows up       B. works out          C. comes up           D. turns out

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38. A. wind          B. day              C. water                 D. weather

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37. A. skill          B. health            C. style              D. talent

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36. A. worsen         B. lessen             C. relieve            D. reduce

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34. ______some English-learning websites if you are free, and you will learn a lot about how to study English.

A. Having visited    B. To visit          C. Visit            D. Visiting

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33. If we know about what causes endangerment, we may be able to takes measures______ it is too late.

A. until           B. unless            C. when            D. before

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