— Why didn’t you watch the program “Where are we going Dad?”? — It was because something

问题补充：

— Why didn’t you watch the program “Where are we going, Dad?”?

— It was because something was wrong with the web TV too many users were receiving it.

A. which

B. that

C. through that

D. through which

答案：

A. which

B. that

C. through that

(答案→)D. through which

解析：句意：--你为什么不看《爸爸去哪了》这个节目？--是因为网络电视坏了，太多人通过它来接受节目。这里使用的是定语从句，先行词是the web TV，定语从句中应该是too many users were receiving it through the web TV，所以缺少through the web TV，用through which引导定语从句，选D。