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If I had a dog I would walk it to the park everyday but I would use a leash.
What's the best way to rewrite this sentence?
a. If I had a dog, I would walk it to the park everyday, but I would use a leash.
b. If I had a dog I would walk it to the park everyday, but I would use a leash.
What is a. If I had a dog, I would walk it to the park everyday, but I would use a leash?