"——I know who owns the farm,I can send the fine through the post,"he said

问题描述:

"——I know who owns the farm,I can send the fine through the post,"he said
A.,As
B,Once
C,Though
D,Until

选B 啊,一旦为什么A不对?a 是因为,还有当----的意思,你选答案要四个都带进去看哪个更通顺