Alice are you ready? We’ll go out for a picnic nine o’clock.A. in B. after C. until

问题补充：

Alice, are you ready? We’ll go out for a picnic nine o’clock.

A. in B. after C. until

答案：

解析：考查时间介词的用法。句意“爱丽丝，你准备好了吗？我们九点之后将出去野餐。”in后跟时间段；after“在......之后”；until“直到......”，常与not连用。故选B。