请帮解一道高中英语题 谢谢-----it is really cold in winter this year.----

so is it是完全倒装,表示进一步的强调,是说事情确实是这样
例如：It is good to practise everyday,so it is
每天锻炼身体是好习惯,确实是这样
no ,it isn;t.不用说了吧?就是一般疑问句的否定回答
as it is = 实际上；副词as it is:
1.in the actual state of affairs and often contrary to expectations
例句与用法:
1.I hope things would get better,but as it is they are getting worse.我希望情况会好转,但实际上是越来越糟.
2.I have to leave it as it is.=我只好随它去了.
3.He isn't nice.As it is,he is bad.= 他不好.事实上,他很坏.
4.This room is as broad as it is long.=那个房间长宽相等.
5.I don't like him.As it is,I hate him.=我不喜欢他.事实上,我恨他.
6.Be that as it may,I'll leave it as it is.=无论如何我们也只能听其自然.
7.As it is,we can hardly get to the station by 6 o'clock.=但事实上,我们几乎不能在六点以前赶到车站.
8.I thought he would get better.As it is,he is getting worse.=我以为他会变好.但事实上,他愈变愈糟.

A.so it is 。<因为这是对前面句子的认可，主语没有变>B.no , i don't think so D.和A一样。

A so is it 是完全倒装，这种句式是表示"....也...."语义不符合。
B no , it isn;t.这种句式只用于回答一般疑问句。
D as is it没有这个句式。

A so is it 是完全倒装，这种句式是表示"....也...."语义不符合。
B no , it isn;t.这种句式只用于回答一般疑问句，此处不可用。
D as is it用法错误。