48．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 【查看更多】

 

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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

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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

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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. has been leaking D. leaked

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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

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It seems that 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

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