英语 词汇题 较难 ★ 精品

选择恰当的从句引导词 — 英语词汇题

英语专业八级(TEM-8) 语言知识(语法) AI 三重审校通过

题目
The archaeologists conceded ______ they had no way of verifying ______ the inscription dated from the twelfth century, ______ made their earlier claims untenable.