----I’m sorry but there is no smoking on this flight.----Oh I that. Sorry I won’t agai

问题补充：

----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

答案：

A. don’t know

(答案→)B. didn’t know

C. won’t know

D. haven’t known

解析：可联系答.案.网客服索取。