Final answer:
The subject of this English question is the correct word choice for a sentence. The sentence should read: 'The crowd was quite impressed when the impressive piano player played the piece.'
Step-by-step explanation:
The subject of this question is English and the grade level is High School. The sentence in question is: 'The crowd was when the impressive piano player played the piece.'
The correct word choice to complete the sentence is quite.
The sentence should read: 'The crowd was quite impressed when the impressive piano player played the piece.'
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