ok i have a question!!! im a babysiter and when i taket the kids 2 the store they all scream 4 toys and candy!!! how d i make them stop???

You tell them no. Depends on their ages, but teach them there are consequences to being naughty. be consistent and do not give in. Once you do, you have lost. Now, once you are out of the store, you might have a treat for them being so good in the store. not something all sugary, but nutritious but enjoyable, so they also know there can be rewards for good behavior. Not bribes mind you.