是选A还是D呢?为什么不选 AJack ___ leave ___ his teacher comes back.A:doesn't ; until B:\ ; until C:won't ,\ D:won't ; until

是选A还是D呢?为什么不选 AJack ___ leave ___ his teacher comes back.A:doesn't ; until B:\ ; until C:won't ,\ D:won't ; until
是选A还是D呢?为什么不选 A
Jack ___ leave ___ his teacher comes back.
A:doesn't ; until B:\ ; until C:won't ,\ D:won't ; until

是选A还是D呢?为什么不选 AJack ___ leave ___ his teacher comes back.A:doesn't ; until B:\ ; until C:won't ,\ D:won't ; until
跟条件状语从句差不多,主句将来事态,从句一般现在事态.