This program was designed by Edwin.The ____ ____this program
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This program was designed by Edwin. 该程序是由埃德温设计的.

The 【man/person designing】this program 【is】Edwin.设计这个程序的人是埃德温. (不要用was, 如果谓语是design这个动作,发生在过去得用一般过去式,而强调这个人是埃德温时,无过去意义,一般现在时即可.)design现在分词短语作后置定语.

The 【designer of】this program 【is】Edwin

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