mountain climbing中climbing必须加ing吗,why?

mountain climbing中climbing必须加ing吗,why? climbing mountain与go mountain climbing有什么区别? 英语作文 our mountain-climbing They had( )climbing the mountain mountain climbing 和 hill- walking 感激不尽：go mountain climbing还是go climbing montain go climbing和go mountain climbing 有区别吗 climb mountains与mountain climbing的区别 climbing a mountain is hard wor they are going to go mountain climbing 为什么英文中的爬山是mountain climbing What about going and climbing Mao Mountain? His love for mountain climbing is great的同义句 为什么英文中的去爬山是go mountain climbing Are you interested in mountain climbing?改同义句：___ you ___ ___ ___ in mountain climbing? Jane likes climbing the mountain very much.改为同义句Jane is （ ）（ ）climbing the mountain 我们能不能说what do you think of mountain climbing for the weekend?在这个句子中介词用for对不对? His love for mountain climbing is so great thatHis love for mountain climbing is so great that he kept on climbing mountains even after this experInce