About common expression If I want to greet someone , the expression between "How are you been these days " and "How have you been these days" which is correct in grammar ? When I haven't seen a friends for a long time , I say "Long time no see" or "We haven't seen each other in a long time" , which expression is better? When I miss someone , I say "I miss you " or "I thought of you " ,which is better? THANKS FOR YOUR ANSWER.