May I have your attention, ladies and gentlemen? The plane in fifteen minutes. Please power off your cell phones.
A.was taking off | B.is taking off |
C.has taken off | D.took off |
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May I have your attention, ladies and gentlemen? The plane in fifteen minutes. Please power off your cell phones.
A.was taking off | B.is taking off |
C.has taken off | D.took off |