There was a very interesting remark in a book by an Englishman that I read recently ______ he thought was the reason for this American characteristic.A.to give thatB.to give whatC.giving thatD.giving what
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D解析该句是复合句，主干部分为there was a very interesting remark in a book，介词短语by an Englishman和定语从句that I read recently都修饰a book，分词结构giving...在句中作伴随状语，what he thought was a reason for...作giving的宾语，what he thought又作这个宾语从句的主语。