1) I am green, red or yellow and inside I am white. I am a fruit. What am I?

2) I am green and when you cut me, I am red. What am I?

3) I am yellow, long and sweet. I am a fruit. What am I?

4) I am long and thin and I grow underground. What am I?

5) I am big and orange. I am the main guest on the Halloween party. Who am I?