Not always a pair - many style guides (eg Chicago) state there should be no closing quote on dialogue if it continues in next paragraph - only the last part will have a closing quote. Of course I'm talking English language style guides - other languages may be and are different.
Irrespective of what quotes are used (single, double, curly, straight or guillemots [sic]) to check dialogue one needs something like Toxaris' addon for Word - 'tis excellent
BR