such在前句中要有指代对象，such+noun的noun要在前文出现才可以

1. collectively known as the subprime lending market是过去分词短语，其做定语具有就近修饰原则，先行词为loans。但在逻辑上，被认为是次贷市场的应是这些borroers。
3. Such在句中没有指代对象， 直接用a group作borrowers的同位语即可。such + noun 中的noun一定要在前文中出现过

such：
作代词，指代前面提过的东西或事情，如：
She longed to find somebody who understood her problems, and in him she thought she had found such a person. 她渴望找一个理解她困难的人，她觉得他就是这样一个人。
Accountants were boring. Such was her opinion before meeting Ian! 做会计的个个乏味。在认识伊恩以前她一直这样想。

诸如此类的，如：
We like such fruits as apples and bananas.

起强调作用，如：
It's such a beautiful day!
This issue was of such importance that we could not afford to ignore it.

动词时态，DO肯定是错的，DE错。
Know需要一个合理的修饰对象，A GROUP比较合适。
with such a group完全复杂了。

DE错在that使用，如果 that 修饰records，后面的句子指代records主动要表达的动作或者内容。
原文 proven records 是想修饰 什么样的borrowers (they do not pay pack their loans on time) = records of these borrowers that they do not pay...

such 就是修饰a group 的，应该不是考点
with such a group 错在with，消失了主语

1. such为什么不能指代borrowers呢？
2. 且我认为such a group表示“这样的一组”，such作限定词限定group
3. 因此我认为 C错在with such a group 是独立主格 ，作状语修饰整句；E错在they的赘余

(D)(E)應改成they 'did' not pay back loans。

"A their冗赘

B 正确

C 理解为独立主格，状语修饰lend，错；理解为和前边的with并列，也错。

DE that是同位语从句，与ABC的定语不同，前者强调record的内容，后者作定语是修饰成分 XXX的record，很明显不做内容上的强调，排除DE。

补：such a noun，这个noun要在前边出现过才行，这个group在前边完全没出现过，所以such不要有，直接group就好"

1) such: such需要有一个被指代的词在之前出现，主句中并没有出现group，所以没有指代，不对。（正确应该是i have no problem with using a standard geometry textbook; indeed, such a book is helpful in providing ready-made sets of practice problems.）
2）record被修饰只能用of，不能用that，这是idiom

1. 过去分词短语，就近修饰 market -> loan 错误， 排除 1.4
2. such 要有指代？
3. 基本的时态

E还有一个错的点
as long as you mention some specific "X" earlier in the sentence, then "such an X" is fine, yes.

another example:
i have no problem with using a standard geometry textbook; indeed, such a book is helpful in providing ready-made sets of practice problems.
--> "such a book" is legitimate because the sentence has mentioned a particular book (namely, a standard geometry textbook).
such + noun 中的noun一定要在前文中出现过

A选项：其次，collectively known as the subprime lending market是过去分词短语，其做定语具有就近修饰原则，先行词为loans。但在逻辑上，被认为是次贷市场的应是这些borroers。

a group collectively known as the subprime lending market是borrowers的同位语。

record that is not idiomatic
such=like the antecedent

A选项：首先，介词短语of their not paying back their loans是proven records的定语。但是其中第一个代词their是赘余的，records已经是borrowers的定语了，并且其身后已经说了是偿还“他们”的贷款；其次，collectively known as the subprime lending market是过去分词短语，其做定语具有就近修饰原则，先行词为loans。但在逻辑上，被认为是次贷市场的应是这些borrowers。

1. known 就近修飾 不應該是time 而是 a group
2. such an/a N 用法: only one of them

（A）前面一个their多余
（B）a group做同位语，代borrows✅
（C）such无具体含义
（D）（E）应该用过去式，非一般现在时

such：
作代词，指代前面提过的东西或事情，如：
She longed to find somebody who understood her problems, and in him she thought she had found such a person. 她渴望找一个理解她困难的人，她觉得他就是这样一个人。
Accountants were boring. Such was her opinion before meeting Ian! 做会计的个个乏味。在认识伊恩以前她一直这样想。

诸如此类的，如：
We like such fruits as apples and bananas.

起强调作用，如：
It's such a beautiful day!
This issue was of such importance that we could not afford to ignore it.

错选a。这里忽略了一个重要的就近修饰原则——还是要严格遵守流程，每一个要素修饰什么要搞清楚

我把of的全排除了。。
e中Such在句中没有指代对象， 直接用a group
that they do not pay back their loans on time是records的同位语从句。这个同位语从句至少要用过去时，即，they did not pay back loans