It seems oil _______ from this pipe for some time.We’ll have to t_英语解答

It seems oil _______ from this pipe for some time.We’ll have to take the machine apart to put it right.
a、had leaked
b、 is leaking
c、 leaked
d、 has been leaking
为什么选D?请翻译整句

人气：468 ℃　时间：2019-10-14 00:32:46

解答

看上去油已经从这个管道里漏了一段时间了.我们得把机器拆开来把它的位置摆正.
持续的一段动作,并且现在还在继续且对现在有影响,所以用完成进行式.