问题
选择题
I jumped on the train, but it _________ ready.[ ]
A. aren't
B. wasn't
C. isn't
D. doesn't
答案
答案：B
搜题请搜索小程序“爱下问搜题”
I jumped on the train, but it _________ ready.[ ]
A. aren't
B. wasn't
C. isn't
D. doesn't
答案：B