---If you have any trouble please feel free to tell us.---A I’m glad to hear thatB I will

问题补充：

---If you have any trouble, please feel free to tell us.---

A I’m glad to hear thatB I will. Thanks very much

C I’m sorry to hear thatD I will think about.

答案：

解析：考察交际用语。A 听到那个我很高兴 B我会的。非常谢谢你。

C 很遗憾听到那个消息D 我会考虑的。根据题意，如果你有什么麻烦，请随时告诉我们。故选B。