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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.
admin
2014-11-28
66
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,空格上的时态可有二种选择:现在完成时与现在完成进行时。
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