We didn’t know the good news he told us.A. afterB. or C. becauseD. until

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A. after
B. or
C. because
(答案→)D. until
解析：after在……之后；or或者，否则；because因为；until直到。句意：直到他告诉我们，我们才知道这个好消息。固定搭配not……until直到……才，故选D。