问题
选择题
34. —Jack, I want to change my job. You know I haven’t achieved anything since I took up teaching.
— Really? There is not a job considered the best one! As we all know, ______!
A．misfortunes tell us what fortune is.
B．all is well that ends well.
C．if a thing is worth doing it is worth doing well.
D．every profession produces its own best.
答案
答案：D