Question

( ),there is no school. A、it is sunday B、it was sunday C、it will be sunday D、it being sunday

要详细过程，拜托

Answer 1

你好。答案是D .
1 这是“独立主格”结构。表原因== AS / SINCE it is Sunday today, there is no school.

2 又如：
Tom has fallen ill, so I must do his share of the work besides mine
== Tom having fallen ill, I must do his share of the work besides mine.

Answer 2

D
用逗号隔开，这是一个简单句，不能同时出现两个谓语动词，后面已经有it 做谓语动词，所以前面使用非谓语形式。
只有D是非谓语形式，ABD都是谓语动词形式
非谓语包括 ：1 动词ing 2 过去分词 3动词不定式

Answer 3

D.独立主格结构，其特征是分词短语（本句中为being Sunday）有自己明确的逻辑主语（本句中是It）。独立主格结构常用来表示原因、伴随状况或补充说明。