问几道英语题1.I like __B__in the autumn when the weather is clear

问几道英语题
1.I like __B__in the autumn when the weather is clear and bright.
A.that B.it
it指代的是什么?
2.it was not yet eight o'clock when he arrived home
这句话是什么意思?not yet是什么意思?
3.The old tower must be saved ,whatever the cost.
我怎么感觉从句缺少谓语呢?
4.-Don't you think it necessary that he_A_to Miami but to New York.
A.not be send B.will not be send
为什么不选B
5.The seaside here draws a lot of tourists every summer.Warm sunshain and soft sands make what it is.
后半句什么意思?为什么用what?
6.MyEnglish teacher's humor was such as to make every studend burst into laughter.
such as to 是什么用法?
7.I was shocked by the news,which made me realize___terrible preblems we would face.
为什么填what

1、it用作形式宾语,它的真正的宾语则是由when引导的从句.我喜欢秋天晴朗的天气
这是it 作为形式宾语的一种特殊用法： 动词＋it＋when / if 从句.常见于appreciate, enjoy, like, dislike, love, hate, prefer等少数动词之后.
2、not yet 是“尚未,还没有”的意思.
2、他到家时,还没到8点钟.
not yet 是“尚未,还没有”的意思.如：
The best is not yet to come.
最好的仍然要来；最好的还没来.
3、它是把系动词is 省略了,状语从句中的省略情况,有时候whatever,whoever等后面的某些成分能省略.
4、在It is/was +形容词后的that 从句中用should的结构, should 可以省略. 这类形容词常见的有: advisable, anxious, compulsory, crucial, desirable, eager, essential, fitting, imperative(绝对必要), impossible, improper, important, natural, necessary, obligatory, possible, preferable, probable, recommended, urgent, vital etc.如：
It‘s natural that she (should) do so.
It is essential that we (should) tell her the news.
5、温暖的阳光和柔软的沙子造就了它（使它成为现在的它）
what it is 作make的宾语.由于这个从句里本身没有表语,故须一个可作is的表语用的词,what既能引导名词性从句,又能在从句里充当（主语或宾语或）表语.
6、 such as to （达到.的程度）
such as to , such 在这里是代词,有“这样,这种,如此（地步）”的意思, as to:以至于,按着.连起来有点这个意味：这样以至于.常用于表示强调,夸张的语气中.
eg.:1.His manner was such as to offend everyone who he met.他的行为已经到了见人就伤的地步.
7、考查感叹句的形式.
what修饰名词或名词短语,有以下两种形式：
1. What+a(an)+（形容词）+单数可数名词+主语+谓语!或是：What+名词词组+主语+谓语!如：
What a fine day it is!
2. What+(形容词）+可数名词复数或不可数名词+主语+谓语!
What kind women they are!how用来修饰形容词、副词或动词.其结构是：How+形容词（副词）+主语+谓语!
How hard the workers are working
望采纳,谢谢!