a little,little,few,a few用法以及something anything用法

a little,little,few,a few用法以及something anything用法
1.There is ___ sheep eating grass over there.
A.little B.few C.a little D.a few
正确答案是C 我选了D
我认为：sheep是单复同形 few修饰可数名词 所以要在BD中选 D代表“还有几个” 所以选D 错在哪里咧
2.Why didn't you say __ instead of there quietly?
I hated the way John was speaking,so I said___.
B.something;nothing
D:anything;nothing
正确答案是B 我选了D.为什么要用something?
还有 anything是不是用于否定句中的 还是应该什么时候用呢