| 1. 难度：中等 | |
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I _____ it to my parents that I have lived through those hard times. A. own B. appreciate C. thank D. owe
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| 2. 难度：中等 | |
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The beginning of the story is excellent, ____is the ending, _____leaves us much to think. A. which; as B. as; which C. that; which D. what; that
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