5 riddles that as very easy and very hard #1

Hello! I am making 10 riddles that are easy and hard. Only in one month (or only 2 weeks or 3 weeks or 1 week), I will make this kind of post.

Riddle  #1: EASY. John was going outside to eat peanut butter cookies because her wife was allergic. But once he opened the bag, there was only 1 peanut butter cookie left. One of his family members must have eaten one! He questioned his wife, daughter, and son. 

The wife said: "I'm on a diet!" 
The daughter said: "I was doing my homework upstairs. I don't have time for cookies!"

And the son said: "I helped mom make a peanut butter cake! Whoever gets this question right, gets 4 TSP. (Put it in the comment section)

Riddle #2: Sammy and his family were going on a camping trip on SUNDAY when suddenly when they opened the door, one of their families son's weren't there! There were 3 people that could have taken the son. 

The first is the chef. "I was making sandwiches for the kids today!"

The second is the security guard. "I was checking in the son's room to make sure everything's okay in the house.

The third is the gardener. "I knew nothing about it! Thanks for telling me. All I did was water the bushes and the grass and flowers!" 

Who took the son? Answer in the comments, then you get 4 1/2 TSP.

Riddle #3: Normal-Hard. Jonny and Elone were eating at a restaurant. They both got a glass of water before eating. The first one drank very fast as he was pretty refreshed. The other one drank slowly as it was still refreshing. But, Jonny (the first one that drank really fast) somehow got posioned.

How did that happen?

(Answer type in comments) And you will get 5 TSP for this question!

Riddle #4 Easy-Normal. You get arrested by the king by doing an illegal thing. But, he lets you choose the prison you want. The first prison has rats scattered over the place and the bars are wax. And you have a small lit candle on the bottom 2 feet higher. The other one doesn't have bars, but you have a chain stuck on the cement. 
Which one do you pick? Choose wisely. If you type this answer in the comments, you get 5 1/2 TSP!

Riddle #5 HARD. Your stuck in a place and you have to type in the answer to multiple riddles to get out of the place. The first riddle is: "There are two of you, but only one of me. Who am I?" The second riddle is: "I am made of cease, but when you throw something humans drink a lot, I die. Who am I?"

The last just says: "Stoodstandundermis." What could the first question's answer be, the second question's answer be, and the last question's answer be in the riddle? Put all of the riddles answers in the comments and you will earn 10 TSP!

Thanks and have a happy holidays of Chinese new year!