Question

It is said that the old pot ____under the earth for about 1000 years by the time it was discovered.

1. A.
   had buried
2. B.
   had been buried
3. C.
   buried
4. D.
   were buried

Answer 1

B
考查时态与语态。By要与完成时连用，本题by后面跟的是过去的时间，要与过去完成时连用，意义是又是应该被动，所以选B。句意：据说那个旧罐在被发现之前已经在地下被埋了1000多年了。