问题描述:
急 been open还是has been opened
-How long has the factory_______?
-about five years.()
A been opened B be opened C opened D been open
为什么选 D 为什么在这句话中open就是形容词而不能是动词呢?
-How long has the factory_______?
-about five years.()
A been opened B be opened C opened D been open
为什么选 D 为什么在这句话中open就是形容词而不能是动词呢?
问题解答:
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