Verb conjugation of "interpose" in English

After next week, I will tutor the Mr. Zillmay from the language lab in Los Angeles, he is currently in the states. The lesson will take place in LA, but it may be held no earlier than mid-February.
I am a computer scientist and I also have a small restaurant with my younger sister (she is also already 53). You can come and visit, I will buy you a drink and we could chat a little.
I'd be very happy if we could write me. I have read your blog. Are you from the U.S.? Where exactly are you from, which state? I have visited Chicago last year because my grandma lives there.