--- I’m sorry, but there is no smoking on this flight. --- Oh, I _________ that.Sorry, I won’t again.
#103054
A
don’t know
B
didn’t know
C
won’t know
D
haven’t known
推荐题目
When I got on the bus,I_____I had left my wallet at home.
#102653
A
was realizing
B
realized
C
have realized
D
would realize