—Flight 331 _____．I'd better be on my way．Goodbye．
—Bye．Happy landing!
| A．is announced | B．is being announced |
| C．is announcing | D．has announced |
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—Flight 331 _____．I'd better be on my way．Goodbye．
—Bye．Happy landing!
| A．is announced | B．is being announced |
| C．is announcing | D．has announced |
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