2. 专升本
  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 句意：从管子里往外漏油好像有一段时间了，看来应把机器拆开修好。考查现在完成进行时态。从“seems”和“for some time”可看出油漏了一段时间了，应该用现在完成进行时，表示“油一直在漏，如果不修的话，还会一直漏下去”。
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