---I’msorry,butthere’snosmokingonthisflight.---Oh,I

问题详情：

--- I’m sorry, but there’s 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

【回答】

B

知识点：动词时态与语态

题型：选择题