题目内容
12. He found it increasingly difficult to read, ____ his eyesight was beginning to fail.
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11. ____ you’ve got a chance, you might as well make full use of it.
10. Only recently_________possible to separate the components of fragrant substances and to determine their chemical composition.
9. Only under special circumstances_________to take make-up tests.
8. _________ by keeping down costs will Power Data hold its advantage over other companies.
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