B: I think I've been trout fishing once. I've never fly fished. Have you fly fished? A: Uh, no I haven't.
she could do that
I don't know that I could do that.
B: I think I've been trout fishing once. I've never fly fished. Have you fly fished? A: Uh, no I haven't.</s>I don't know that I could do that.</s>she could do that