1.It was in Beihai Park____they made a date for the first time_____the old couple told us their love story.
A.where,that B.that,where C.where,where
D.that,when
2.The hard-working peasants and their happy life____we saw in the countryside made a wonderful impression on us
A./ B.who C.which D.whom
请详细解答，谢谢

1, 选A.
第一空是用where引导的定语从句；第二空是构成强调句式的连接that，也就是it is(was)+ 被强调部分 + that....这里强调的是在公园里，而他们又是在这个公园里第一次约定，所以用到了定语从句，后又用到强调结构。
2，选A./ 。
在定语从句修饰限定的先行词，既有人又有事物时，关系代词只能用that,如果作从句的宾语，可以省略。