【題目】Do you know the boy under the tree_______ is playing with a dog/

A. which B. as C. who D. what

【答案】C

【解析】

試題分析： 考查定語從句；句意：你知道在樹下玩狗的那個(gè)小男孩嗎？the boy是先行詞，____ is playing with a dog/定語從句，缺少主語，用who/that，故選C項(xiàng)。

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