Re: Present Perfect vs Simple Past
The last point you raise --oops - on the prior page! -- depends on how you view yourself in the time spectrum of the day.
[So far today] I've been to the post office, the bank, and the market today. [But the day is not over because] I'm home for a few minutes, then I have to take Johnny to hockey practice, stop by the church to drop off the items for the rummage sale, and drop off my dry cleaning, which I forgot when I went to the market earlier.
Oh, I had a busy day [and the busy part is over]. I went to the post office, the bank, the market, took Johnny to practice, and dropped off the stuff for the rummage sale and the dry cleaning. Thank goodness Mark's mother will bring the boys home so I can sit still for a few moments.
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.