D
for some time表示动作持续一段时间 用现在完成进行时
it seems oil_____from this pipe for some time ,we'll have to take the machine apart to put it right
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
我选C错了,请问我错在哪了?
A.had leaked B.is leaking C.leaked D.has been leaking
我选C错了,请问我错在哪了?
英语人气：824 ℃时间：2019-10-17 02:32:52
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