Fruit Riddles

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Across
  1. 3. I am sour used to make lemonade and add flavor to food.
  2. 6. I have green spikes outside and juicy sweet inside
  3. 7. I am red and covered with seeds outside and inside is sweet and juicy
Down
  1. 1. I am the saddest fruit. Who am I?
  2. 2. I am yellow u can peel my skin and eat me
  3. 4. I am green as well as in black the fox said I am sour and went away
  4. 5. I am a color as well as a fruit. Who am I?
  5. 6. I look like a heart, but I don't beat like it. I am sweet and sour.