A. 对景区服务人员的投诉 B. 对景区服务产品的投诉 C. 对景区设施的投诉 D. 对景区硬件及环境产生的投诉
A. 对 B. 错
A. She was listening to some music. B. She was chatting with friends. C. She was totally hooked on this game!