as a matter of fact ks5u ks5u

as a matter of fact ks5u ks5u
as a matter of fact
这个题目……
—— Do you mind my opening the window?It’s a bit hot in here.ks5u ks5u
—— ,as a matter of fact ks5u ks5u
A.Go ahead B.Yes,my pleasure ks5u ks5u
C.Yes,I do D.Come on ks5u ks5u
C