几道英语题目、帮个忙补全对话A:What's you favorite subject?B:ScienceA:Science?But I think it's so difficult.B:( ) you work hard,you can learn science ( )What's your favorite subject?A:P.E
问题描述：
几道英语题目、帮个忙
补全对话
A:What's you favorite subject?
B:Science
A:Science?But I think it's so difficult.
B:( ) you work hard,you can learn science ( )
What's your favorite subject?
A:P.E
答
When;easily
答
If easily