1.A. 可先改成一般疑问句形式:Who is the owner of this dictionary,因此用A。CD不符合think引导的疑问句式,what/who/which/where do you think......2.C. 你确定你没有打错字?应该是that is my duty。宾语从句。改为一般简单句为:to show deep conern for every student is my duty.3.B. 固定搭配。 have something done, have somebody to do都表示让别人做的,而自己没有做。如have my heir cut.剪头发不可能自己剪吧!Did you often ha...