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2024-08-16  27
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、leaked
C、is leaking
D、has been leaking
答案 D
解析 现在完成进行时表动作已经持续了一段时间并且还在进行，与for some time相对应。
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