题目内容
--Nero is crying. Do you know _______ she’s so upset?
--Well, she lost her pet cat which was just like her family member.
A. who B. what C. why D. when
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题目内容
--Nero is crying. Do you know _______ she’s so upset?
--Well, she lost her pet cat which was just like her family member.
A. who B. what C. why D. when