短文改错,要说明每个的原因,
Walter’s goal in life was become a successfully doctor.He knew he
had to finish high school first,so he put his heart into his study—in particular,
biology,chemistry,and maths.Because he worked hard at these subjects,
Walter became good at it.However,Walter forgot that he needed to master
some other subjects beside those he had been chosen.As a result,Walter
fails both English and Latin in the end of the second school year.But he
had to repeat these subjects and he was almost unable to graduate like planned.
Walter learned a good lesson.