A teacher has a wide ______(vary) of duties.

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问题 A teacher has a wide ______(vary) of duties.

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答案variety

解析词性转换。根据句意，此处需用vary的名词形式。其词形变化是：vary(动词)→variety(名词)→various(形容词)→variously(副词)此处是一固定短语(a variety of)意为：种种，各种各样的。

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大学英语三级A级

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