Помогите пожалуйста, задание 2 и 3, английский

Were they? No, they weren't
Won't there? Yes, there will
Shouldn't they? Yes, they should
Doesn't it? Yes, it does
Hasn't it? Yes, it has
Will I? No, you won't
Aren't I (commonly used, more formal would be Am I not)?Yes, you are
Are they?No, they're not

Latvia has joined the EU in 2004, has it not?
Undemocratic countries can't join the EU, can they?
Some EU countries do not use the euro, so they?
EMU means Europe Monetary Union, does it not?
There were two major European wars in the twentieth century, weren't there?
Britain is leaving the EU, is it not?
EU passport holders can travel freely in Europe, can't they?
More than a million EU students have studied abroad since the 1980's, haven't they?