Question

Nobody knows _______broke into the house last night and stole the important papers. A．who wa..

Nobody knows _______broke into the house last night and stole the important papers. A．who was it that B．it was who that C．who it was that D．that it was who

Answer 1

C

试题分析：考查强调句型。本题考查的是强调句型的特殊疑问句，把是对人进行提问的特殊疑问句，作为宾语从句，使用陈述语气，特殊疑问词放在前面，后面使用陈述语序。句意：没有人知道是闯进了房子偷走了重要的论文。故C正确。 点评：强调句型的基本结构为It is/was被强调成分that/who其它成分；其最大的特点就是去掉it is/was…that/who…句子仍然成立。要注意强调句型能强调除谓语动词以为的所有的句子成分。在考查的时候，经常会把强调句型和定语从句结合在一起考查，要注意分析句子的成分。