Hi belly_ttt
1) What is a CPA (a job)?
Chartered Public Accountant
2a)
A: I like your hair.
B: Me, too.
A: I like your hair. You too?
3) We say Vietnamese history or Vietnam's history?
Both
4) What is the left overs of a regime, say a palace of a Dysnasty and that show how far that dynasty progressed/ developed
??
5) What is the special name for trash that come from our daily life?
??
6) coverage vs news vs insurance
News coverage Insurance coverage Insurance news 
