"Old time is still a-flying" is an example of a metaphor
C is the answer. When will the winter end?
Present participle would be 'clipping'. Perfect participle would be 'having clipped'. Therefore, the only option left is 'past participle'.
Answer: It emphasizes the idea that bacteria can be both helpful and harmful.
Explanation: Bacterial microbes are essential to helping our bodies work, but also they can also harm us as well. Therefore C is correct.
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The answer to the problem is whose
