英语选择题，麻烦详细解释下各选项原因，解释清楚详细的给分

Question

Do you remember those days__we spent along the seashore very happlily?
A when B where C which

Who is the women__is sweeping the floor over there?
A who B / C that D when

He talked about a hero__no one had ever heard.
A of whom C about that

It is the first time__I have come to your city.
A that B which D when

Answer 1

1、C定语从句，修饰those days，一般会选择when，但是后边的定语从句缺少spent的宾语，是固定搭配， sb spend sometime to do sth
2、C定语从句，修饰woman（你应该是写错了），所选词做定语从句的主语，并且是修饰人，本来应该选who，但是因为句子是疑问句，已经是who开头了，在这种情况下要选that，这是死规定。
3、A定语从句，修饰hero，和从句最后的heard构成固定搭配：听说过某人。
4、A算是一种固定的用法吧，it is the first time that
希望帮到你。

追问

第3题，那个hear about为什么不行，不是也有听说的意思吗

Answer 2

第一个选A。句子的意思是你记的那些我们在海边度过的开心日子吗？选项的意思分别为
A：when 时间疑问词 时候
B：where地点疑问词 哪里
C：which 选择疑问词 哪一个

很明显，days是指日子，后面那句话是修饰时间的，所以选择when

第二个选A。句子的意思是 那边在扫地的女人是谁？很显然，需要选择的词是来修饰women的。
后面那句话明显没有主语，所以选A。如果有主语，可以选B或者C

第三个选A。 句子意思是 他谈论着一个没人听说过的英雄。
A of whom 是跟后面的衔接，heard of 听说， whom“谁”的意思，做宾语。

第四个选A。这是我第一次到你的城市来。后面半句是形容time的。

Answer 3

Do you remember those daysA__we spent along the seashore very happlily?
A when B where C which (因为有 those days，表时间）

Who is the women_C_is sweeping the floor over there?
A who B / C that D when （

He talked about a hero_A_no one had ever heard.
A of whom C about that

It is the first time_A_I have come to your city.
A that B which D when