問題詳情

3.() The special custom in this small town can _____ at least 500 years ago.
(A) date back to
(B) trace back to
(C) be speculated
(D) be dated back to

參考答案

答案：[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)