—I hate talking with that guy. Look, he is ing. What should I do?
—Don’t speak until .
A. speaking
B. spoken to
C. spoken
D. speaking to
网友回答
A. speaking
(答案→)B. spoken to
C. spoken
D. speaking to
解析：状语从句的省略形式，其完整句子是Don’t speak until you are spoken to.