A teacher has a wide (vary)______ of duties.variety空格前为形容词,空格处应该填名词。a variety of

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

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答案 variety

解析 空格前为形容词,空格处应该填名词。a variety of是个固定表达,表示“许多,各种各样的”。
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