###INSTRUCTION: Fix grammatical mistakes in this sentence: I'm sitting here with a stupid, puzzled looks on my faces tried to figure out how we letting Mo Williams score 52 point...
###RESPONSE: 
I'm sitting here with a stupid, puzzled look on my face trying to figure out how we let Mo Williams score 52 points.
I'm sitting here with a stupid, confused look on my face trying to figure out how we should let Mo Williams score 52 points.