The workers were 'exposed to' dangerous chemicals. [=they were placed in conditions that left them unprotected from dangerous chemicals]
His mistakes have 'exposed' him 'to' ridicule. [=he has been ridiculed because of his mistakes]
Children are being 'exposed to' violence on television.
(..) We're gonna get through this. I promise. Took us five years to buy his way outta here. He didn't see the sun once. We're too exposed here. Sir, should I call for your doctor? What did you say? Shall I call for your doctor? I hope you've wakened me (..)2015 The Hunger Games: Mockingjay - Part 2
(..) We want them to lay down their arms. So you might wanna experiment with a little sensitivity, warmth. Make it quick, you're exposed. This is Katniss Everdeen, speaking to all of the loyalists from the heart of district . Survivors! Inbound! Ready! Ready! Guns up! (..)2015 The Hunger Games: Mockingjay - Part 2