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It seems oil________from this pipe for some time.We’ll have to take the machine
It seems oil________from this pipe for some time.We’ll have to take the machine
游客
2024-08-13
11
管理
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
句意:看来石油已经从这个管道泄漏了一段时间了。我们得把机器拆开,把这个管道放好。由于“石油”和“泄露”是主动关系,因此要用leak的主动形式;再根据第一句中的for some time和句子主句的一般现在时态可知从句要用现在完成进行时,且现在完成进行时也能表示可以持续到将来的动作,与第二句的将来时态对应,故选D。
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