Verb conjugation of "stiften" in German

In May I'll be able to show the machine at an exhibition in the university. In addition, we can show it to all these university partner laboratories in the U.S., which are led by people who live here.
My correction were added and highlighted with yellow markers and attached to this email. Tell me now if you have any questions about grammar rules, since I was a teacher 10 years ago.
How long have you had your dog? Does your wife take him for a walk too? Please send me my e-mails to the address listed below and add your own pictures too. I want to know a lot about you.