对 I have been here for 15 hours 就划线部分提问

对 I have been here for 15 hours 就划线部分提问 I have been waiting for you for two hours.(对划线部分提问) I have math for two hours对画线部分提问(划线部分是for two hours ) I have art lessons for tow hours 划线部分是for tow hours ,对划线部分提问 We can eat for two hours here.对划线部分提问 划线部分：for two hours he`s been studying there for two whole hours对划线部分提问.划线部分：for I have been to Beijing twice.(就划线部分提问) We have been here since 2011对划线部分提问.划线部分是since 2011 I have been to__ Ocean paek______.对划线部分提问. the girls will stay here（ for two hours） 对划线部分提问 I often have( noodles) for supper 就划线部分提问 He has been here for 2 years.（对划线部分for 2 years进行提问）