| 1. 难度：中等 | |
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There was _____ time when everything to do with ____nature could keep Anne spellbound. A. a, the B. the, a C. a, / D. the , the
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| 2. 难度：中等 | |
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---Kevin, you look worried. Anything wrong ? ---Well, I _____ a test and I’m waiting for the result. A. will take B. had taken C. took D. take
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| 3. 难度：中等 | |
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Please _____all the numbers. Those numbers______10,000. A. add to , add up B. add up, add up to C. add up , add to D. add up to, add to
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| 4. 难度：中等 | |
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Generally speaking, ______according to the directions, the drug has no side effect. A. when taking B. when taken C. when to take D. when to be taken
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