second is correct because frnds are plural so use do with plural subject

we go to school means that we daily go to school we are going to Italy means ki hum Italy Jha rha h

why did you call me

why did you choose this article

why did you not go to my house last night

since birth

since morning

what had she been doing since morning

did you call her is correct bcz did + sub + verb1st +object

2nd is correct