题干
Tom worked very hard at all his lessons. , he became the top student in his class.
A：In order to
B：As a result
C：As usual
D：For example
答案(点此获取答案解析）
B
Tom worked very hard at all his lessons. , he became the top student in his class.
A：In order to
B：As a result
C：As usual
D：For example
