英语高手请进：david promised to come round to have supper with us today.but he ___.I've been alone for half an hourA.won't B.hadn't C.hasn't D.doesn't

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• 英语高手请进：david promised to come round to have supper with us today.but he ___.I've been alone for half an hourA.won't B.hadn't C.hasn't D.doesn't
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