What is the use crying sad what is the use是什么意思

"According to the writer,what is the use of the what is the use of your going there What do you think is the most ______(use) book? 《What is the first metal that man learned to use》 there is no use crying over the spilt milk和It's no use cryin what did the color of the floor use to be还是What is the color what is the most important for me now is how I use what I ha How is the water?What do we use water to do?What can we do t It is no use doing what you like.what's the meaning? what's the difference between 'is more use' and 'is of more What is the cloth useful——?---We can use it ——the dirty floo what is the use of running when we are not on the right road