Question

--- I thought you were going to the mountains last week.

Answer 1

D.

too much +不可数名词 I have too much work to do .

so much +不可数名词 There is so much food left.

much more +多音节形容词或副词的原级,构成比较级

This picture is much more expensive than that one.

much too +形容词（副词） She is much too busy.