2. 考研
  3. 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.

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问题 It seems oil______from this pipe for some time. We’ll have to take the machine apart to put it right.
选项 A、had leaked
B、is leaking
C、leaked
D、has been leaking
答案D
解析 题干的第2句表示将要采取的措施，意味着第1句话“漏油”(leak)的动作发生在过去某一时间，并且持续到现在为止仍在继续。因此，第1句话应采用现在完成时或者现在完成进行时。
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考研英语一

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