Question

It is reported in the papers that the old coins _______under the earth for about 200 years by the time they were discovered.            

A. had buried        B. had been buried       

C. buried           D. were buried

Answer 1

B。

解析:

本题考察时态。由by the time引导的从句中谓语were discovered知应主句用过去完成时，by引导的时间状语或从句时，主句一般用完成时。