How come I've been really good today as far as GC is concerned?
How come I'm really excited that my LS is joining GC and will soon be as addicted as we are?
How come CT4 told me about that workshop, specifically so I would know she wouldn't be logged on, over the weekend?
How come I told her I would probably forget and look for her anyway?
How come I DID forget, and I DID look for her?
How come I need to grow back some of my dead brain cells?

How come my manager calls me on the phone and her office is literally about 10 steps away?
How come I'm short on how comes today?
How come, OA, how come?