这段英文是什么意思？

Question

John is a famous writer now. but he said he was not a (good ) student when he was young. He was often late for (class ) didn’t like doing his homework. Sometimes, he slept in class while the teacher was teaching. He didn’t understand much, (but ) he always thought he understood everything. One day, the teacher (ask ) the student a question, ‘When Jack was ten years old, (his ) brother Bob was twenty. Jack is fifteen now and how old is Bob?’ John said, ‘That’s easy. Bob is twice as old as Jack, so he is now thirty.’
Another time, the (teacher ) in science class asked, ‘When it thunders, (why ) do we always see the light before we (hear ) the sound?’
‘But, Miss.’ said John quickly, ‘Don’t you know our eyes are in front of our ears？

Answer 1

John 是一位有名的作者，可是他说当他年轻的时候不是好学生。他老是迟到，不喜欢做作业。有时，在老师讲课时他睡着了。他不怎么明白，可是他却认为自己什么都明白了。有一天，老师问学生一道问题 ，“当Jack十岁，他的哥哥Bob 是二十岁，那当Jack十五岁他的哥哥 Bob 是几岁呢？”
John 回答“太简单了，Bob 的年龄是比Jack大两陪，所以他是三十岁了。”
同时，科学科目的老师问“为什么天打雷的时候，我们先看到他的电能后才能听见它声音呢？”
”可是，Miss“ John 急忙的回”难道您不知道我们的眼睛是在耳朵的前面吗？“

（对不起哦，可能有些汉字写错了，多原谅。因为我刚学汉语的。）