49. A: Didn’t we have a briefing this morning? B: _______ It was canceled.
(A) Yes, we did.
(B) No, we didn’t.
(C) Yes, we didn’t.
(D) No, we did.
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統計: A(61), B(331), C(90), D(27), E(0) #3445997
統計: A(61), B(331), C(90), D(27), E(0) #3445997