A large number of seventh-century gold coins have been unearthed by a teacher in the UK. _____ 12 years of treasure hunting, he found the coins _______ searching farmland with a metal detector.
after, whilst
If you find objects that you believe to be treasure, you must ____ report your find to the appropriate authority. Otherwise you may face a £5,000 fine.
first
_____ the find has been reported and experts agree it is real treasure, the ______ stage involves determining its market value.
once, next