Change a long pause into a short one

Question: Change a long pause into a short one by doubling a letter.What are the words?

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Question: Look at my face, I am somebody. look at my back, i am nobody. What am I?

Question: What tastes better than it smells?

Question: What goes in the water black and comes out red?

Question: What loses its head in the morning and gets it back at night?