问题
选择题
-I'm sorry, but there's no smoking in this section on the train.
-Oh, I ________ that, and I won't again.[ ]
A．don't know
B．didn't know
C．won't
D．haven't known
答案
答案：B
搜题请搜索小程序“爱下问搜题”
-I'm sorry, but there's no smoking in this section on the train.
-Oh, I ________ that, and I won't again.[ ]
A．don't know
B．didn't know
C．won't
D．haven't known
答案：B