请说明详细语法和理由
问题描述：
请说明详细语法和理由
1there was __ Tv at that time,so we didn't know __ about the world.
A not;a lot of B no;little C no;a lot
为什么不能选a 呢
2there's __ sheep under the tree
A a little B little C few D a few
为什么不能选d呢
3People should sleep __ their windows __ at night
A let,open B with,opening Callow,open Dwith ,open
答
1there was __ Tv at that time,so we didn't know __ about the world.A not;a lot of B no;little C no;a lot答案为 C ；如果选A 那么,not +any 2there's __ sheep under the tree A a little B little C few D a ...