When they saw a snake sleeping in the bushes ,and ran away quickly .
问题描述：
When they saw a snake sleeping in the bushes ,and ran away quickly .
答
当他们看见一条正在灌木丛中睡着的蛇,他们迅速跑开了.找错并改正哦，那简单，把后半句中and改为they即可，因为已经有when引导时间状语从句，无需再加连词连接了，而且后半句少主语。