There was a woman in Detroit , who has two sons . She was worried ___28___ them , especially the younger one , Ben , __29__ he was not doing well in school . Boys in his class__30__ him because he seemed so __31___ .
The mother  __32__ that she would , herself , have to get her sons to do better in school . She __33__ them to go to the Detroit Public Library to read a __34__ a week and do a report about it for her .
One day , in Ben’s __35__ , the teacher held up a rock and asked if anyone knew it . Ben __36__ up his hand and the teacher let him __37__ . “Why did Ben raise his hand ?” they wondered . He _38__ said anything ; what did he possibly want to say ?
Well , Ben not only __39__ the rock ; he said a lot about it . He named other rocks in its group and even knew ___40___ the teacher had found it . The teacher and the students were __41__ . Ben had learned all this from doing one of his book __42__ .
Ben later went on to the _43_ of his class . When he finished high school , he went to Yale University __44_ at last became one of the best doctors in the United States .
After Ben had grown up , he __45__ something about his mother that he did not know as a __46__ .
She , herself , had never learned how to __47___ .

A．about B．on C．with D．over

A．because B．so C．but D．though

A．played with B．go through C．took off D．made fun of

A．clever B．hard C．slow D．quick

A．asked B．decided C．forgot D．heard

A．made B．let C．told D．considered

A．notice B．message C．book D．question

A．class B．room C．office D．lab

A．looked B．gave C．took D．put

A．think B．leave C．stand D．speak

A．always B．even C．quickly D．never

A．found B．played C．knew D．threw

A．whether B．when C．where D．why

A．afraid B．surprised C．worried D．unhappy

A．pictures B．exercises C．shops D．reports

A．top B．end C．back D．side

A．so B．and C．or D．however

A．learned B．remembered C．understood D．guessed

A．doctor B．child C．student D．teacher

A．read B．work C．teach D．show