问题
选择题
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
答案
答案：D
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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
答案：D
