31．—Can you tell me what time the flight to Detroit leaves? —I'm sorry, but it ．A. has bee

发布时间：2020-08-15 02:58:09


31．—Can you tell me what time the flight to Detroit leaves?
—I'm sorry, but it     ．
A. has been canceled
B. had been canceled
C. has canceled
D. had canceled

网友回答

(答案→)A. has been canceled
B. had been canceled
C. has canceled
D. had canceled
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