Tom is ten years old，and he is a lazy(懒的)boy．He doesn’t like doing any work．He has to go to school ,of course．but he doesn’t s    hard there.His father and mother are b     doctors and they hope that their son will become one too when he g     up．But one day Tom says to his mother，“I want to be a cleaner when I finish school．”
“A cleaner?” his mother asks．She is very surprised.” That's not a very good job．W      do you want to become a cleaner?”
“Because I only have to work one day a w    ，”Tom answers．
“Only one day a week?” his mother says，“What do you mean? And h   do you know it?
“Well”，Tom answers，“I think the cleaners come to work on T      , I o      see them on that day．” His mother l       and says,“They go to work on Monday, Wednesday, Thursday and Friday in other s        .”