In this task, you're given an article and an answer. Your task is to generate the fill-in-the-blank question for this answer based on the given article. The blanks are always at the end of the question, and can be filled with more than one word or phrase.

[EX Q]: Article: Long long ago, there was a man who was good at shooting arrows.He asked the king to declare him as the greatest archer of the country.The king was about to do so when an old servant of the king said,"Wait,sir.I know an old man who lives in the forest.He is a much greater archer.Let this young man go to him and learn from him for at least three years." The man could not believe what the servant said,but he went and found the old man and he was! For three years he learned from him.Then one day,when he thought he had learned everything,the thought arose in him:"If I kill this old man,then I will be the greatest archer." The old man had gone to cut wood and he was coming back carrying wood on his shoulder.The young man hid behind a tree,waiting to kill him.He shot an arrow.The old man took a small piece of wood and threw it.It struck the arrow and the arrow turned back and wounded the young man very deeply.The old man came,took out the arrow and said. "I knew that some day or other you were going to do this.That's why I have not taught you this secret.There is no need to kill me.My Master is still alive,and I'm nothing before him.You must be with him for at least thirty years.And he is very old,so go fast! Find the old man!"
Answer: he could then become the greatest archer
[EX A]: The young archer wanted to kill the old man because _ .

[EX Q]: Article: If you look at the night sky, you'll often see stars moving very quickly. In fact, they move much more quickly than they should according to their size and the laws of physics. Scientists do not completely understand why the speed of these stars is so high. But many believe the reason is that much of the universe is made of something called "dark matter". Groups of stars called galaxies, such as the Milky Way, might even be made up of 90 percent dark matter. How much something weighs depends on where it is. The same object weighs only half as much on Mars as it does on Earth and almost three times as much on Jupiter. So scientists prefer to talk about the mass of something rather than how much it weighs, because mass does not change. They can work out the mass of galaxies by measuring the distance between them and the speed they move at. Recently, Jorge Penarrubia, a senior academic at Edinburgh University, UK, and his team discovered something interesting: The mass of the Milky Way is only half as much as the mass of another nearby galaxy, Andromeda. This seems strange, and dark matter may explain why. Finding out more about dark matter could help us understand how the universe began, but this is not easy. Lots of scientists with different types of expert knowledge are working on the problem. We can't see dark matter, it's very difficult to measure and we can't find out its mass. Unlike stars, dark matter doesn't produce or reflect light. But we can make a good guess that it is there because of the way things move and the way light bends. Experts now think dark matter may be very different from the matter that we find on Earth. There may also be five times as much dark matter in the universe as ordinary matter.
Answer: 7.5 kg; 45 kg
[EX A]: Something that weighs 15kg on Earth weighs about _ on Mars and _ on Jupiter.

[EX Q]: Article: As you grow rapidly through your teenage years,you will experience a lot of changes.The changes may seem difficult and they may seem to happen quickly.Don't panic!You will deal successfully with them!You are a young adult now! With more responsibility,you will find more freedom to make your own choices.This is a time to be well informed about your choices so that you can make healthy balanced decisions that will help shape your future.You may already know your career path or you may have no idea at all what you want to do.Both situations are fine!Work hard and the right opportunity will present itself to you. Young adulthood means greater freedom and more choices.You will probably want to be independent.But try not to shut your family out of your life.You should learn to think of others even though you are old enough to look after yourself.Your family have been with you since you came into this world. It is also perfectly natural in this time for you to spend more time with your friends than your family.Choose your friends wisely.A true friend will stand by you no matter what happens. This period is part of the life cycle.There are _ who will be with you throughout life's journey and there will be some people with whom you part and go separate ways.Leaving school can be hard.The reality is that you may not ever see all of your classmates again. You are a young adult.It is your life.No one can live it for you.The choices that you make from now on will be your choices.So making the right choices will be important to you.Life is for living.Enjoy your life wisely!
Answer: Becoming a Young Adult
[EX A]:
The best title for this passage would be _ .