干混砌筑砂浆:请教一道选择题

来源:百度文库 编辑:查人人中国名人网 时间:2024/07/03 11:04:19
I tried hard to pull out the lid of the bottle,but it____.
A.didn't open
B.wasn't open
C.wasn't being opened
D.wouldn't open
答案是D,请问为什么?谢谢

235

表示到现在还没有开
D.wouldn't open

C.wasn't being opened 错 ed要去掉

C