求老师解答:Look at the factory!

求老师解答:Look at the factory!
Look at the factory!It _______ before I came here. [ ]
A.is built
B.has built
C.was built
D.was building
ifhaoif 1年前 已收到1个回答 举报

小猫GG5 春芽

共回答了17个问题采纳率:94.1% 举报

C

1年前

9
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