A：bought; has had
B：bought; has
C：has bought; has had
D：has bought; had
将铁粉投入到盛有Cu2+、Ag+、Fe3+的溶液中，反应完毕时，若烧杯底部有铁粉剩余，溶液中一定不含的金属离子是 ____ ，若烧杯中没有铁粉剩余，则溶液中一定含有的金属离子是____ ，若溶液中不含有Cu2+时，则一定不含有的金属离子是____ ．
