Question

let's eat __.that sounds ___.a .oranges ,well b.apples ,good

Answer 1

That sounds good.

主语（名词或代词或动名词）+系动词+形容词 构成主系表结构

sound是系动词不是行为动词,所以不用well修饰.

补：be动词、 sound、feel、smell,,taste,seem、appear、become、get等等都是系动词.

至于第一空,oranges和apples都可以填.