GIVE ANSWERS - English

Stem nå!ubesvart
If I have a sentence like:" Where's my mom and dad?", why is it "Where's ..."? Shouldn't it be "Where are my mom and dad?", because there are two persons?
I am from Germany and my mothertongue is German, so if anybody wants to learn it and needs help, just ask me or send me a message! I'd be glad, if I could help you!


 


Also, please excuse me, if I make some mistakes. I just started to learn English on a daily bases.