I’m surprised to hear from my school teacher again. it is ten years since we met last.A.

问题补充：

I’m surprised to hear from my school teacher again. , it is ten years since we met last.

A. In a word

B. Believe it or not

C. That’s to say

D. Of course

答案：

A. In a word

(答案→)B. Believe it or not

C. That’s to say

D. Of course

解析：短语辨析。In a word总之，一句话；Believe it or not信不信由你；That’s to say那就是说；Of course当然。句意：我非常吃惊又收到我的老师的来信。信不信由你，自从我们上次见面已经十年了。所以选B。