Answer:
I drift forever with the current and flows to your everyday life. I make living easy but I am good at killing people too.
What kind of dog keeps the best time?
I look at you you look at me I raise my right you raise your left.
I am a little piece of paper, yet sometimes hold lots of value. I am all you need to get into big events, but will cost you. I am an important part of travel. And if lost, you're not coming. What am I?
What loses its head in the morning but gets it back at night?
I am your mother's brother's only brother in law. Who am I?