关于some time
问题描述：
关于some time
1.it seems oil ----from this pipe for some time.
We will have to take the machine apart to put it right.
A.is leaking B.has been leaking
2.The news came as no surprise to me.I --- for some time that the factory was going to shut down.
A.had known B knew C have known
特别是some time
答
B 现在完成进行时态,表示一个动作从过去开始一直持续到说话时,中间没有停顿.这个动作可能停止,也可能持续下去.例如：I have been learning English for two years.A.过去完成时态 表示过去的过去.从句中使用了过去将...