Final answer:
The sentence is grammatically correct in French. It translates to "Often, I answer the professor's questions".
Step-by-step explanation:
The sentence "Souvent, je réponds aux questions du professeur" is grammatically correct in French.
"Souvent" means "often", "je réponds" means "I answer" and "aux questions du professeur" means "to the professor's questions".
So, the sentence translates to "Often, I answer the professor's questions".
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