Question

Cindy shut the door heavily and burst into tears. No one in the office knew__________she was so angry.

A．where

B．whether

C．that

D．why

Answer 1

D

本题考查名词性从句。句中why引导宾语从句，在从句中作原因状语。句意：Cindy重重的关上了门大哭起来，办公室没有人知道为什么她如此的生气。