TASK DEFINITION: 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.
PROBLEM: Article: Whales live in the ocean, but they are not fish. They are warm-blooded mammals and must have air to breathe. The babies are born alive and drink milk from the mother's body. It took millions of years for the whale to develop as it is today. Every spring groups of whales swim hundreds of kilometers to warm places to bear their young. Each group goes to the same place every year. The mothers take very good care of their babies. The fully grown whales are very gentle and playful with each other, and with humans. They "talk" to each other with a high noise that sounds beautiful. This"talking" can be heard for more than 300 kilometers in open waters. Yet humans kill over a hundred whales a day. They kill them to make whale oils and a lot of other things. Killing them is a modern business with modern machines and even harpoons( ) that explode( ) inside the whales. A whale dies very slowly and in great pain. Some ships kill every whale they can find, even the mothers and babies. Then there are no young whales to grow up or to bear more young.
Answer: whales are fish

SOLUTION: A commonly mistaken belief is that _ .

PROBLEM: Article: Charlie studied in a famous college for four years. He studied hard and did well in all his subjects. He hoped to become a good teacher. This year he left the college and began to work in a middle school. He likes his students and is strict with them. He does his best to make his classes lively and interesting. One day he carefully explained a chemical reaction to the students of Grade 2 in the chemistry lab. "Be careful, everyone," he said loudly. "Before I make the experiment,there're twenty five atoms of carbon ,but after I finish it, there're twenty four atoms of carbon left!" He stopped to watch the classroom and hoped his students would go on explaining it. But the young men looked at each other and nobody answered him. He had to ask, "What happens? What makes the atom lost?" The classroom was very quiet and none of the students looked at their teacher. "Who can tell us where it has gone?" Suddenly a soft voice came from the back row, "We did not see anybody leave the lab!"
Answer: his students could do well in chemistry

SOLUTION: Charlie hopes _ ,so he does his best to make his classes lively and interesting.

PROBLEM: Article: In our daily life, many of us feel stressed more or less. Some like this pressure and work better because of it. Others are not comfortable with any stress at alls they soon become unhappy if they feel stressed. Sometimes stress can lead people to do things they wouldn't usually do, such as overeat, smoke, drink, or use drugs. Streas, however, is a very normal part of life. It is important to understand that stress doesn't come from an event itself, that is, from the things that are happening in our lives. It comes from the meaning we give to what has happened. For example, a crying baby may be stressful to one person, but it may not bother another person at all, a traffic jam may be stressful to one person while another person may be able to stay calm. We can experience stress any time we feel we don't have control. It can come from a feeling that we can't do anything about a situation. Basically, it is the body's way of showing anxiety or worry. Stress is not just caused by our mental or emotional condition. It is also influenced by how tired we are, whether we have a balanced diet with enough vitamins and minerals, whether we get enough physical exercise, and whether we can relax. The key point of relieving the stress is that we need to find what is causing the stress in our lives. Once we have found it, we should try to change that part of out lives. If we believe that we can control stress, we can begin to control out lives. Then we can start to use stress in positive way.
Answer: a hard test.

SOLUTION:
According to the text, _ can cause stress.