Answer:
My first is twice in apple but not once in tart. My second is in liver but not in heart. My third is in giant and also in ghost. Whole I'm best when I am toast.
I grunt and have a curly tail. People say I'm dirty but I'm actually very clean. What am I?
I am a tiny insect that gives you sweet food. I live in a hive and have a painful sting. What am I?
I am black and white with a fishy diet. I cannot fly but I'm an excellent swimmer. What am I?
John Lennon sang about being this toothy creature.
I hold two meanings. With one I may be broken, with the other I hold on. What am I?