---Flight551forDallas______.Imustbeoffnow.---Haveapleasanttripthen.A.

发布时间：2020-08-14 09:38:59

---Flight 551 for Dallas ______. I must be off now.
---Have a pleasant trip then.A.is being announcedB.has announcedC.was announcingD.had been announced

网友回答

A解析考查时态及语态。句意：飞往戴勒斯的551航班正在被播放呢，我现在必须要走了。祝旅途愉快。正在被播放的动作应用现在进行时的被动语态。所以选A。
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