2. 职称英语
  3. It seems oil______from this pipe for some time. We’ll have to take the machine a

It seems oil______from this pipe for some time. We’ll have to take the machine a

游客2024-10-17  28
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 根据句中的时间状语for some time可知，所填空的时态应有两种选择：现在完成时或现在完成进行时，故[D]为答案。
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