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
问题描述:
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
答
have never
答
have not
答
haven't 如果两个空就have never