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

admin2012-03-04  46

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、had leaked
B、leaked
C、is leaking
D、had been leaking

答案D

解析
转载请注明原文地址:https://jikaoti.com/ti/CLLMFFFM
0

最新回复(0)