【C18】A．previousB．devotedC．latestD．efficient

【40】A．capabilitiesB．responsibilitiesC．proficiencyD．efficiency

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A．previousB．foremostC．firstD．front

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【C4】A．variousB．subsequentC．latestD．previous

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The students take a ______ test in March, and the main exam is in July.A．previousB．prelimi

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The constitution of a______society is not necessarily simple.A．previousB．precedingC．primar

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【C17】A．previousB．presentC．thenD．current

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Improving energy efficiency can be done quickly.A

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