问题描述：
英语单选How disappointed I was to get the news from Mary ------ the picnic was called off!
How disappointed I was to get the news from Mary ------ the picnic was called off!
A which B who C.whether D.that
How disappointed I was to get the news from Mary ------ the picnic was called off!
A which B who C.whether D.that
问题解答：
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