what can you swallow that

what can you swallow that what can you see swallow that can also swallow you? What can you swallow that can also swallow you? what can you swallow that can als swallow 谜语:what can you swallow that can also swallow yuo?快 What can you swallow than can also swallow you? 脑经急转弯：What can you swallow that can swallow you?(什么东西你能咽下它,它 I can swallow my pride for you What can you learn in that subject? What can you made that can't be seen? ok,can't ask you that what you come from? What can you do if you decide that