天津华隆小区:Mount Blanc,___ we visited last summer,is the biggest mountain in Europe.为什么答案是where?

Mount Blanc,___ we visited last summer,is the biggest mountain in Europe.为什么答案是where? We ___ a lot of ___ there -___ shall we have to go? We usually begin our first class ___ songs. Lei Feng ___, but we'll never foget him. Lei Feng ___, but we'll never forget him. 31.Thank you. Without your help, we ___ our goal. 【should we ___ the postage ____ the parcel by ourselves?...】 31.We were surprised at ___ the exam. We belive that our dream will ___ someday.