【B12】A．whoB．whichC．whomD．where

【C20】A．in thatB．for whichC．with whomD．by whom

【C5】A．whoB．whatC．whomD．which

A．whoB．whichC．where

A．thatB．whichC．whomD．what

材料题请点击右侧查看材料问题 查看材料A.whoB.whichC.whom

Which of us ______ knows something about physics does not know this？A．whoB．whatC．whomD．tha