Along the way，everyone will have a lot of things to remember.One thing happened long time ago，but it has remained in my（1） 　 　.

It happened when I was in Grade Four.My biology（2） 　 　，Mr.White，came to the classroom five minutes before the class began.He looked excited and said to us，"Boys and Girls，today I have a（3） 　 　but interesting task for you to complete.Do you want to know what it is？Are you interested？"Everyone（4） 　 　great interest.We couldn't wait to know what we would do next.

Later，Mr.White led us to go（5） 　 　the biology laboratory. "During the following days，one of your tasks is going to（6） 　 　what will happen to these caterpillars（毛毛虫） and what you have learned from the project.You should watch the caterpillars carefully every day. " Mr.Write said and wrote some（7） 　 　on the blackboard.

My class started doing a special（8） 　 　in which we raised butterflies from caterpillars，（9） 　 　

all of us watched the insects in our laboratory.Within a week they began to come out（10） 　 　.We all paid more attention to（11） 　 　them by heart.Finally，the wings began to get（12） 　 　and wet.Then the butterflies shook their wings carefully to dry by（13） 　 　.

About three days later，the insects began to fly.One little boy，who had been watching carefully each day，saw this and announced in a（n）（14） 　 　voice，"They are flying!"

"Of course they're（15） 　 　 ! "a little girl in a class replied."They're called butterflies.If they didn't fly，they'd just be butter!"

（1）A．school	B．journey	C．mind
（2）A．speaker	B．cleaner	C．teacher
（3）A．serious	B．special	C．strict
（4）A．showed	B．formed	C．shared
（5）A．into	B．from	C．during
（6）A．work out	B．find out	C．put out
（7）A．invitations	B．inventions	C．instructions
（8）A．action	B．project	C．method
（9）A．and	B．but	C．so
（10）A．quickly	B．easily	C．slowly
（11）A．watching	B．hearing	C．touching
（12）A．perfect	B．ready	C．dirty
（13）A．ourselves	B．yourselves	C．themselves
（14）A．excited	B．angry	C．strange
（15）A．running	B．flying	C．sleeping