During these days I am looking forward to ________ my sweet heart, for I miss her very much．A.hearB.hearingC.hear fromD.hearing from
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D解析首先要确定“收到某人的来信”的两种说法：hear from sb．和get/receive a letter from sb．，然后再考虑短语look forward to，to为介词后面跟名词或者doing，所以选择D项。