Jack's birthday was coming soon，so he asked his dad for a bicycle so that he would not need to walk to school anymore． （41） ______ Jack got a book instead but he did not complain．
One bright and sunny day while Jack was walking past a store on his way to school，he saw a big boy on a bike．The bike was too small for the boy． （42） ______ ．
The boy was popular in Jack's school．He recognized him．The boy's name was Tom．Tom seemed to have broken his leg．Jack picked up Tom's bike which was not damaged and rode to the nearby hospital to get help．（43） ______ Jack rode Tom's bike to school so he would not be late for class．
After school，Jack quickly rode the bicycle to Tom's house with a book for him．（44） ______ He had to stay at home for a rest till his leg was healed（痊愈）．
To Jack's surprise，Tom got a new bike on his birthday in two months'time and Jack could have Tom's old bike．He was very happy．（45） ______ Jack visited Tom every day till Tom's leg was healed．

A．Luckily，Tom was not too seriously injured． B．As the boy was turning around a corner，the bike crashed（撞） into a tree． C．From then on，they became good friends． D．Tom gave his new bike to Jack to show his thanks． E．However，his dad had lost his job and did not have much money． F．Jack found it interesting and couldn't help laughing． G．A few minutes later，doctors came and brought Tom to the hospital．