Jim used to be a policeman 变否定句

Jim used to be a policeman 变否定句 Jim used to be a policeman 变一般疑问句 there used to be a hospital near here 变否定句 there ___ ___ be JIm used to be a college teacher.(保持句意） JIm used to______ __ be used to怎么变否定形式? He wants to be a policeman.(改为否定句） He—— ——to be a policeman. She used to be a history teacher改为否定句 she used to be a history teacher 改为否定句 I used to smoke .变一般疑问句和否定句 句型转换He wants to be a policeman.（改为否定句）She is (cleaning the r 求文档: There used to be a cinema here before the war怎么改成否定句? There used to be a lot of trees.变为否定句