----I’m sorry, but there is no smoking on this flight.
----Oh, I _____ that. Sorry, I won’t again.
A.don’t know | B.didn’t know | C.won’t know | D.haven’t known |
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----I’m sorry, but there is no smoking on this flight.
----Oh, I _____ that. Sorry, I won’t again.
A.don’t know | B.didn’t know | C.won’t know | D.haven’t known |
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