---What’s made Tommy so upset? I believeIt shocked him so much．A. He lost the gameB.

问题补充：

---What’s made Tommy so upset?

--- , I believe．It shocked him so much．

A. He lost the game

B. Lost the game

C. Losing the game

D. Because of losing the game

答案：

A. He lost the game

B. Lost the game

(答案→)C. Losing the game

D. Because of losing the game

解析：考查非谓语动词。答句中losing the game动名词作主语，补全为Losing the game made Tommy so upset，故选C。