My answer to last question: working to my fucking exams. It's my main task, it should be. No, it's not important to check grammarly correctness of "working to". I'm not native english speaker and probably I will never understand how works gerunds and infinitives in this shitty language... I'm gonna go to my main task now, and whoever are reading this comment, you should do the same thing too dude. Turn off your phone, NOW