在下列句子中填入恰当的关系代词或者关系副词
问题描述：
在下列句子中填入恰当的关系代词或者关系副词
1、It was impossible to find an empty chair_______I could seat myself and get relaxed.
2、The year 1949 is the one_____ all Chinese should keep in mind,______the People's * was founded.
答
where that when