句型转换(每空一词).1.I have been to Macau before.(改为否定句) I ______ ________ been to Macau be

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句型转换(每空一词).1.I have been to Macau before.(改为否定句) I ______ ________ been to Macau be
句型转换(每空一词).1.I have been to Macau before.(改为否定句) I ______ ________ been to Macau be

句型转换(每空一词).1.I have been to Macau before.(改为否定句) I ______ ________ been to Macau be
haven't 如果两个空就have never

have not

have never