Question

短文改錯(cuò)
文中共有10處語言錯(cuò)誤，每句中最多有兩處。錯(cuò)誤涉及一個(gè)單詞的增加、刪除或修改。
增加：在缺詞處加一個(gè)漏字符號（∧），并在其下面寫出該加的詞。
刪除：把多余的詞用斜線（\）劃掉。
修改：在錯(cuò)的詞下劃一橫線，并在其下面寫出修改后的詞。
注意：
1.每處錯(cuò)誤及其修改均僅限一詞；
2.只允許修改10處，多者（從第11處起）不計(jì)分。

     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 her studies----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 in both
English and Chinese 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.
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Answer 1

Walter’s goal in life was∧become a successfully doctor. He knew he had to finish high
                                 1.  to                2.  successful
school first, so he put his heart into her studies----in particular, biology, chemistry and maths.
                                                   3.   his
Because he worked hard at these subjects, Walter became good at it. However, Walter forgot that 
                                                                                                    4. them
he needed to master some other subjects beside those he had been chosen. As a result, Walter fails
                                                         5.   besides               6. 去掉                                       7. failed
both English and Chinese in the end of the second school year. But he had to repeat these subjects 
                                    8.   at                                                  9. So
and he was almost unable to graduate like planned. Walter learned a good lesson.
                                                          10. as