常温下，下列各组离子在指定溶液中一定能大量共存的是

A．1.0 mol·L^－1的KNO₃溶液：H^＋、Fe^2＋、Cl^－、SO₄^2－

B．甲基橙呈红色的溶液：NH₄^＋、Ba^2＋、AlO₂^－、 Cl^－

C．pH＝12的溶液：K^＋、Na^＋、CH₃COO^－、Br^－

D．在某无色透明的溶液中：Na⁺ 、K⁺、SO₄^2-、MnO₄^-

Not only __________ interested in football but _________ beginning to show an interest in it.

A．the teacher himself is , all his students are

B．the teacher himself is, are all his students

C．is the teacher himself, are all his students

D．is the teacher himself, all his students are