Fill in the blanks: "The puppy has lost __ way home, and __ getting dark."

The sentence in question uses phrases that require careful differentiation between "its" and "it's." The term "lost its way home" denotes possession, indicating that the puppy is missing its specific route home. Here, "its" is the correct possessive form that shows ownership.

In the second blank, "it's getting dark" employs the contraction for "it is." This contraction is appropriate because the context refers to the condition of darkness approaching, which can be rephrased to "it is getting dark."

Therefore, the correct answer reflects the appropriate use of "its" to show possession for the puppy in the first part of the sentence and "it's" as the contraction for "it is" in the second part, accurately conveying the intended meaning.