______ is true to say that a dog is man’s best friend.

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问题 ______ is true to say that a dog is man’s best friend.

选项 A、That
B、What .
C、It

答案C

解析此题考查动词不定式。此句中it为形式主语，真正主语为后面的不定式。

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公共英语一级笔试

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