One day my math teacher asked me to help him save back-up copies of his work in the computer. I then realized I was able to   1   the grades for all of his classes. I showed him how to copy files from one disk to another and he   2   me.
A few days later he asked me to help him again, because he   3  how to do it. When I began to show this to him, some students in my class   4   and began to talk among themselves   6  . Later that day, at lunch time, I was   5   by several of them.
“Hey, could you help us change our grades in math? We’ll   7   you…”
I could not believe what I was hearing．I could get paid for something very   8  ．" All right．I'll do it．" The next day my math teacher   9   me to help him out．When he was not paying attention, I began to change their grades from F’s to A’s．
I soon became very   10   among my friends. They began to treat me like a god with a magical   11  . I began to change the grades of students．Word    12   quickly and I became very rich．
Everything was going fine    13   I was called into the headmaster's office．When I got there, my teacher was mad, and the headmaster had an angry   14    in his eyes．  "I have known you for three years now．I don't want to   15    what your teacher said, but I'm afraid that I must．He has too much   16   , " he said．" Do you have anything to say   17   yourself?" he asked．
"No．" I said finally．I did not realize how serious my actions had been．I had violated the   18   of my teacher, and the headmaster．And there was no way   19  ．I was forced to leave my school．
That was a good   20    for me．

A．assess B． access C．mark D．change

A．accepted B．supported C．guided D．thanked

A．doubted B．reminded C．forgot D．remembered

A．noticed B．hid C．agreed D．complained

A．disappointedly B．quietly C．angrily D．freely

A．appointed B．appreciated C．approved D．approached

A．follow B．pay C．inspire D．praise

A．simple B．interesting C．familiar D．pleasant

A．encouraged B．got C．forced D．advised

A．optimistic B．grateful C．popular D．sensitive

A．power B．strength C．energy D．right

A．slipped B．spread C．escaped D．fled

A．after B．since C．until D．as

A．look B．light C．sight D．feeling

A．influence B．ignore C．oppose D．believe

A．experience B．confidence C．evidence D．pressure

A．to B．by C．of D．for

A．trust B．intention C．promise D．honor

A．in B．on C．down D．back

A．story B．skill C．lesson D．example