一英语高考题Atthebeginningofclass,thenoiseofdesks___couldbeheard?
Atthebeginningofclass,thenoiseofdesks___couldbeheard?
AopenedandclodedBbeingopendandclosed
答案是B
我想问A为什么不对?不能理解成用过去分词作定语吗?