—I hate talking with that guy. Look, he is coming. What should I do?
—Don’t speak until_______.
A. speaking B. spoken to C. spoken D. speaking to
—I hate talking with that guy. Look, he is coming. What should I do?
—Don’t speak until_______.
A. speaking B. spoken to C. spoken D. speaking to
B
状语从句的省略形式，其完整句子是Don’t speak until you are spoken to.