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3．_______ is wonderful to have a swim in such hot weather．（　　）

A．

This

B．

C．

D．

She

分析在這么熱的天里去游泳是很爽的事情．

解答答案：C．
this意思是"這個"；he意思是"他"；it意思是"它"經常用來作形式主語或形式賓語；she意思是"她"．根據"_______ is wonderful to have a swim in such hot weather．"通過分析句子結構可知，這個句子的真正的主語是不定式短語"to have a swim in such hot weather"為了避免頭重腳輕，所以要用it來作形式主語，來代替后面的不定式短語，綜上所述，故選C．

點評首先要掌握句子的意思，然后結合具體的題目，就可以確定正確答案．

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