It has been a common practice since ancient times to date official documents by the year of the rulers issue them, or from within whose jurisdiction they emanated.
Aa common practice
Bancient times
Cissue them正確答案
Dwithin whose
答案與詳解
rulers 為名詞,後方不可直接接原形動詞 issue。應改為相對代名詞子句 who issued them 或現在分詞片語 issuing them 以修飾 rulers。
