Please help to see which sentence is correct or if they are both wrong. Scenario: I'm in a phone call talking to one of my friend, and i want he to be here. The following is what i would say, but i don't know which one is correct. 1: It would be great if you were here. 2: It would be great if you are here. I was told that when you are going to make some hypothesis you have to use the past tense, but i'm not sure if it's always the case. Thanks in advance.