(compete the tag-questions) 1)your parents have never learnt english or other foreign 2)nowdays all educated should know 3)students at your school speak english durning the break-times as well as durning the english

Aren't you mistaken? instead of "compete" should be "complete"(дополнить).
1)...,have they?
2)...,shouldn't they?
3)...,don't they?