John said he'd been working in the office for an hour, was true.A.heB.thisC.

John said he'd been working in the office for an hour, ________ was true.

A.he

B.this

C.which

D.who

试题答案

C

解析：

该题考查非限制性定语从句，修饰主句中he’d been working in the office for an hour这一情况，所以只能选择which，在从句中作主语。