Verb conjugation of "change" in English

It would be an advantage if you could send it via DHL, UPS or another Currier, because the parcel was lost once when we sent it with regular mail. Please send me a reference number after you send it.
They are longer than most examples given by online dictionaries, they resemble actually more to a language study book. Please do the rest of the sample words later today and with 2 pairs each and send them over when you are ready.
I sell clothes for children, women and men. I love my work. By the way: In Germany it is very cold, minus 15. We seem to be friends for years but have known each other just for two weeks.