题目内容
完成句子
These pictures must ________________（追溯到）the middle of the 7th century.
答案：date back to
解析：
解析：
|
date back to |
练习册系列答案
相关题目
题目内容
完成句子
These pictures must ________________（追溯到）the middle of the 7th century.
|
date back to |