Her remarks left me wondering________she could have changed so suddenly.

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问题 Her remarks left me wondering________she could have changed so suddenly.

选项 A、when
B、how
C、whether
D、what

答案B

解析 本题考查的是宾语从句。其中关系副词how表示方式,由它来引导从句是完全符合题意的。所以正确答案为B。
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