the reason they didn't go to see the house is ____ they prefer to live

问题描述:

the reason they didn't go to see the house is ____ they prefer to live
The reason they didn't go to see the house is _____ they prefer to live in an apartment.
A.because B.because of C.due to D.that
选哪个?我觉得是D,是不是表语从句啊?

D
是的