It seems oil ______ from this pipe for some time. We’ 11 have to take the machine apart to put it right.

admin2015-02-08  45

问题 It seems oil ______ from this pipe for some time. We’ 11 have to take the machine apart to put it right.

选项 A、leaked
B、is leaking
C、had leaked
D、has been leaking

答案D

解析 本题考查的是现在完成进行时,它强调在从过去到现在的时间里,动作或状态一直持续或一直反复出现。句意为“看来,这个管道漏油已有一段时间了,我们将不得不拆卸机器排除故障”。根据seems和for some time判断使用现在完成进行时,故选D。
转载请注明原文地址:https://kaotiyun.com/show/Otgc777K
0

随机试题
最新回复(0)