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英语考试
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Makingenergyusecompletelyharmlesstotheenvironment____________verydifficultandusuallyeconomicallyexpensive.
Wehavealreadyboughtsometomatoes.(改成一般疑问句)_______youboughtanytomatoes________?
CAMELRatingSystemincludes：A：CapitaladequacyB：AssetqualityC：Managementability
