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9.I've found a bounch of keys,but I don't knowwhose they are.

分析 我找到了一串鑰匙,但是我不知道它們是誰的.

解答 63.whose,考查名詞性從句的引導詞,根據語境此處是know后面引導賓語從句,從句缺少表語,根據語境"不知道它們是誰的"因此使用引導詞whose"誰的鑰匙".

點評 考查名詞性從句的引導詞,要學會分析句子成分,對引導詞進行確定.

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