Answer:
We know most about a few interesting things. This sentence has a noun clause.
Explanation:
The noun clause is 'a few interesting things'. A 'noun clause' is said to have a set of words that perform the same as function of a noun. There are many functions of a noun clause. Here the 'function' of this noun clause is as a 'direct object'.
A 'direct object' noun clause receives the action from a transitive verb. The verb 'know' is passes on the object 'interesting things'.