Question

The reason ____he was late was ____he had taken a wrong bus. A．why; because B．for; because.

The reason ____he was late was ____he had taken a wrong bus. A．why; because B．for; because C．why; that D．for; that

Answer 1

C

试题分析：考查定语从句和表语从句。本题使用的是固定句型The reason why...is that...“......的原因是......”。从句he was late不缺成分，先行词是the reason，因此，定语从句用why引导，for不能引导定语从句，排除B、D；was后跟从句作表语，从句he had taken a wrong bus是主谓宾结构，不缺成分，用that只起引导作用，排除A；故选C。