— David has gone to Australia on business.— Really? I ______ why he was absent from today's meeting.[ ]A. am wonderingB. wonder C. was wonderingD. had wo-高中英语-魔方格

◎ 题干

— David has gone to Australia on business.
— Really? I ______ why he was absent from today's meeting.

[ ]

A. am wondering
B. wonder
C. was wondering
D. had wondered

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◎ 解析

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◎ 知识点

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