---What do you think made her so upset?- her hometown.A. As she missedB. MissedC. Becau

问题补充：

---What do you think made her so upset?

--- her hometown.

A. As she missed

B. Missed

C. Because of missing

D. Missing

答案：

A. As she missed

B. Missed

C. Because of missing

(答案→)D. Missing

解析：句意：你认为什么使她这么不愉快？想念家乡使她这么不愉快。这是一个省略句，完整形式为：Missing her hometown made her so upset.故选D。