Question

英语语法问题！！！！

The costs of distribution and sales make up a large part of the prices that ________.
A.are paid for all products
B.all products are paid for
C.for which all products are paid
D.for all products paid
为什么选A啊 其他选项能分析一下吗

Answer 1

The costs of distribution and sales make up a large part of the prices that ________.

A.are paid for all products
B.all products are paid for
C.for which all products are paid

首先排除C，因为that是从句引导词，从句只能有一个引导词，for which也是引导词，这俩只能要一个，pass了。
B的说法也不算错，但要那麼说的话，就不能要that。因为这里that引导的是限定性定语从句，即“are paid for all products ”，而能看到，这部分是没有主语的，因此that充当了它的主语。如果没有that，这句话就不完整了。

Answer 2

首先要明确pay的用法是sb pay some money for sth，这句句子中costs代表的金钱，购买的是products，这里就是被动了，所以是the costs are paid for

Answer 3

这是一个定语从句，在句子中做主语，所以要有被动语态。

Answer 4

D. 主语不应该是物
C. 已有that作引导词，for which
B. 结构意思"产品被付来换prices"
pay…for…付（钱）换……
A. 意思the prices are paid for…
所以，答案是A