"Have you finished your lesson，George？"Said Mr．Prentice to his son，who had laid aside his book and was busy making a large paper kite．
"No，father，"replied George，hanging down his head．
"（77） ______ "
"Because it is so difficult，father，I'm not sure that I shall never learn it．（78） ______ My memory is so bad．"
"If I were to promise you a holiday on the thirtieth of the month after next，do you think you would forget the date？"
"（79） ______ "
"You are good at skating，and flying your kite，and playing footballs，are you not？""Yes，father．"
"And you cannot learn your lesson!My dear boy，you are lying to yourself．（80） ______ ""But have I not tried，father？"again asked George．
"（81） ______ Come，for this afternoon lay aside that kite you are making，and give another effort to get your lesson ready．Be serious，and you will soon learn it．"
A．No，I'm pretty sure that I should not．
B．You can learn as well as any one，if you will try．
C．It is easy．
D．Well，try again．
E．Besides（而且），I could not remember it after I had learned it．
F．If you don't pay more attention to your lessons you will never be fit for anything．
G．Why not，my son？