**** -You are making a killing.(what does it mean?) It means the person is making a lot of money. -people are obsessed with their cell phones.(it's correct or not?) yes, correct and very very true! haha :) -it is a double edged sword.=? It means that whatever you do, it could be good or bad. -I am too picky about.=? This isn't a complete sentence, but being picky means that you only like select things. My cousin is too picky about her food, she will only eat very fattening foods, and absolutely nothing healthy! -I am not too picky about.=? Same as above, except...not :) I'm not too picky about what I eat, as long as it's edible, I'll eat it! -she is a film buff.=? This means that the girl knows a LOT about movies, maybe it's her favorite hobby, but she's very knowledgeable about them.

1. You are making a killing. - You're making a lot of money. 2. People are obsessed with their cellphones. - Cellphone is one word. 3. It is/It's a double-edged sword. - It's an idiom for something that can help you, but also hurt you. 4. I am not picky about (noun). - Ex. I'm too picky about food. (meaning, they care too much about what they eat.) 5. I am not too picky about (noun). - Ex. I'm not too picky about food. (meaning, they don't care what they eat.) 6. She is/She's a film buff. - She's watched a lot of films/movies. Hope this helps. Let me know if you need any more clarification.

- "To make a killing" is to earn a lot of money. For example, to have a very good job. - That sentence is fine. - "A double edged sword" is something that could go well or badly. For example, stealing money: you could get rich, or you could go to prison. - "picky" means you only like a few things. I am "picky" with food: I take onions out of my hamburgers, and don't like green sauces. Some people might be "picky" with who they date. "Not too picky" means you're okay with most things - if we're going to go a restaurant and you want to know which, I might let you choose my saying "I'm not (too) picky". - A "buff" is someone who likes something a lot. We usually use it to talk about people who like films, but you can use it for some other things (you might be a videogames buff, a comic book buff...) sometimes.

Hi there - you are making a lot of money. - correct, well done. - whatever one does, it will either be good or bad. - you need to complete the sentence. So it would be like this: " I am to picky about what movie to watch". Meaning, you cannot decide which movie to watch.