I am doing my homework.He said.(两句合成一句）He said ______ ______ doing his homework 要原因

正确答案：填he was
即：He said he was doing his homework.
翻译：他说他正在做作业.
解析：这是一道把直接引语转换成间接引语的题,变成间接引语时,其实就是变成了一个宾语从句,从句中的主谓语和主句的主谓,时态要一致.
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