分析句子!从句.

题目

分析句子!从句.
①I have forgotten where we went yesterday.
②Where we went yesterday is covered with all kinds of flowers.
③Oh! This is where we came yesterday.
④This is the place where we came yesterday.
⑤Here, he made the promise that he would come here 10 years later.
⑥I will make a mark where he made the promise.
⑦where unemployment and crime are high, it can be assumed that the latter is due to the former.

答案