wants to stay in a hotel has to pay by themselves.A. AnyoneB. The oneC. WhoeverD. No matt

问题补充：

wants to stay in a hotel has to pay by themselves.

A. Anyone

B. The one

C. Whoever

D. No matter who

答案：

A. Anyone

B. The one

(答案→)C. Whoever

D. No matter who

解析：通过分析句子结构，可知这个句子中包含一个主语从句，且引导词在从句中作主语，表示“任何人，无论谁”，故选C。