听力原文：F：I was so busy preparing the handouts and other materials for the presentation that I didn't doublecheck the venuE.My assistant had told me that it was to be held in the Hilton Conference Center, so I just called a cab and got therE.I was so surprised to find nobody there, and so I called up my assistant…She said she had left me a note and didn't interrupt me, seeing I was so busy.
(15)