Select all that apply. Which sentences have correctly formed question tags?
The trainees understood, didn't they?✓الإجابة الصحيحة
Everything is labelled, aren't they?
Let's review the map, shall we?✓الإجابة الصحيحة
Nothing was missing, was it?✓الإجابة الصحيحة
الشرح
The correct tags reverse polarity, match the available auxiliary, and use the suitable pronoun or fixed special form. The faulty example treats everything as plural even though its standard tag pronoun is it.