Question

一道英语题高中的：It is said that the old coins __ under theearth for about 100 year by the time

they were discovered
A.had buried B.had been buried C,buried D.were buried

Answer 1

B.had been buried
发现的时间是过去，此处要用完成时，因此过去完成时，被埋藏，所以Bhad been buried
据说那枚古币在被发现之前就已经被埋在地下大约有一百年了。

Answer 2

选B

用被动语态，排除A

根据by可知，用完成时态，排除CD

如果您认可我的答案，请点击下面的“选为满意回答”按钮，谢谢！

Answer 3

B
过去完成时

Answer 4

选B。一般情况下for about 100 years表示一段时间，一般要接完成时。