it ___sad that some people are deaf.A is B will be C are D be 请具体说明理由.

it ___sad that some people are deaf.A is B will be C are D be 请具体说明理由.
it ___sad that some people are deaf.
A is B will be C are D be 请具体说明理由.

it ___sad that some people are deaf.A is B will be C are D be 请具体说明理由.
It ___sad that some people are deaf. 选择题
A is B will be C are D be 请具体说明理由.谢谢
答：A
译：有些人是聋子,这件事情是很悲伤的.
析：that-从句是真正的主语,it作主语,排除CD. it will be sad 指的是将来,而that-从句讲的是一般的事实,排除B,It is +adj. +that-从句是个句型.例句可以看下面的教案.

PS： 上面的是我多看了几次教案后才重新答的.一开始和其它人一样,自动地将sad改成了said, 而成为句型：it is said that . “据说.”句型.后来发现,不会将said拼成sad拼错两次!后来才发现,楼主确实没有打错said!
即使这样,这题还是有问题的,sad的是人,不是事!一般说：I am sorry (unhappy/sad ) that some people are deaf.

下面是和大家一样,将sad自动改为said之后,发现的问题和回答.留着给大家参考吧.
答：一看这题就是有问题的小学初中题.答案为A没有问题.（sad为said之笔误大家都能看出来）,关键是,题句没有意义,它和说：我今天中午在街上看见有几个人 一样的没有意义,如果说：我今天中午在街上看见有几个人在打架,这样才有跟人说的必要.
同理,据说有些人是聋子,是没有意义的一句话.改为“据说有些人生下来就是聋子或瞎子”.这还差不多.
经搜索,发现此题正是出自某个老师的教案中自编的例句和练习题：

Unit 6 A charity walk
一、教学内容：
Unit 6 A charity walk
Grammar

二. 教学目标：
掌握Unit 6的语法结构和用法：
It’s adj. that clause
It’s adj. to do
It’s adj. for sb. to do

经典讲解
Now if you are a sports fan, please follow me and look at some funny pictures.
Let’s learn ‘It’s adj. …’句型
Read sentences
1. It’s wonderful that I can stay with mum for some time.
2. It’s impossible that you can kick a goal.
3. It’s necessary to tell girls who I am.
4. It’s important for Beckham to kick a goal.
5. It’s funny for the fan to dress as Alerting.
讲解一、
It＋is＋形容词＋从句.如：
It 是形式主语,that从句才是真正的主语.如：
【It is sad that some people are blind. 】
It is wrong that we look down on disabled people.
It is necessary that we learn English well.
It is important that you have your own support team.
It is certain that he will come. 他一定会来.
It’s true that he may fall behind the other students. 他真的可能落后于其他同学.
It is strange that he should say so. 他居然这么说,真是奇怪.
Exercises
1. It is necessary _______________(我们帮助老人)
【2. It is sad ___________________(有些人是聋的)】
3. It is ________(错误的)that some people______________（看不起） blind people.
4. It is sad that some children in poor countries______________（不能上学）.
keys:
1. that we help the elderly.
2. that some people are deaf.
3. wrong ,look down on
4. can’t go to school

【典型例题】
一、用“It is + adj. + that”连接句子
1. necessary/ we keep our city clean
2. dangerous/ people drive after drinking
3. wrong/ you give the children sweets every day
4. sad/ people in poor countries do not have enough food
5. possible/ we will live on Mars in the future
【答案】
1. It’s necessary that we keep our city clean.
2. It’s dangerous that people drive after drinking.
3. It’s wrong that you give the children sweets every day.
4. It’s sad that people in poor countries do not have enough food.
5. It’s possible that we will live on Mars in the future.

根据后半句are显示的时态是一般时，所以前面也要保持时态一致，而且是单数的
所以填is 据说 有些人失聪了
希望对你有帮助哦~

A it is said that固定短语 据说
据说。有些人是聋子。
如有不懂请在问。望采纳。谢谢。

为你解答。
It (A is) said that some people are deaf.
据说有的人是耳聋的。
解释：It is said that，这是个常用句型，意思为“据说……”，用一般现在时态。

你好！
选A。
句意：有的人失聪了，这是件令人难过的事情。
陈述一般事实，用一般现在时，It is。。。
此句it为形式主语， 真主语为that 。。。

A It is said that```据说···
主语从句，that后的句子是真正主语
实际上是：That some people are deaf is said.