Here are the answers!
Riddle 1:
You use a knife to slice my head but you weep beside me when I am dead… What am I?
Answer: An onion
Riddle 2:
I am a rock group that has 4 members, all of whom are dead, one of which was assassinated. What am I?
Answer: Mount Rushmore
Riddle 3:
Whoever makes it, tells it not. Whoever takes it, knows it not. Whoever knows it, wants it not. What is it?
Answer: Counterfeit Money
Riddle 4:
What English word has three consecutive double letters?
Answer: Bookkeeper
Riddle 5:
Which does not belong in this group: Apple, Grape, Banana, Cherry, Pear?
Answer: The Banana. It’s the only one that needs peeled before eating.