---What do you think worries him so much?
---______.A.He didn’t pass the examB.His father is seriously illC.Lost his bikeD.What Jim said just now
网友回答
D解析上句的意思为：你认为什么使他如此的担忧？可知是对主语进行提问。从四个选项中看出，只有D能做主语，用what引导的名词性从句做主语，完整形式为What Jim said just now worries him so much.所以选D。