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.

Article: winter-swimming has become popular in Beijing. three years ago, few people would go swimming in the city waters. but now there is a winter-swimming enthusiasts'club and it has more than 2,000 members. the oldest is 84 years of age and the youngest is only 7. _ They may be workers, peasants, soldiers, teachers, students....Though it is now the coldest part of the season and the water temperature in the city's lakes is around 0degc, many winter-simmers still swim in the icy waters, even when it is snowing. They enjoy themselves in the lake, while the people by the side of the lake are wearing heavy clothes. why are so many people interested in winter-swimming? Because winter-swimming can be good for one's health. Bei Sha is a good example. He is 69 years old, and he once suffered from heart trouble for 26 years. After ten years of winter-swimming he is now in good health. Scientists are now studying the effects of winter-swimming on health.
Answer: The members do different jobs at different places.
Guess what "the members are from all walks of life" means _ .

Article: I once experienced an unforgettable trip to Gloucester to see some of the world's most beautiful and exciting animals in their own habitat , the North Atlantic Ocean. After a long trip by bus, we got on the ship. After a while, we stopped and everyone on the ship started to shout because we saw a humpback whale . It was wonderful. Sometimes, whales came so close to the ship that you thought you could easily touch them. While we were watching the whales, a guide was giving us some information about them. She told us that we saw only two kinds of whales -- 50-foot humpback whales (singing whales) and 70-foot fin back whales (the second largest whales on earth). She also said we could easily recognize a whale by its tail because every whale has a different kind of tail just like people have different fingerprints. They all have names, and on this trip, we saw "Salt" and "Pepper", two whales named by a biologist and a fisherman. They were swimming together all the time. I took twenty-seven photos, but it was very hard to take them because the whales were quick and stayed on the surface of the ocean just for a short time. It was really something. It was one of the chances that a person hardly ever experiences in life, but I had that chance.
Answer: an unforgettable trip to watch whales
This passage is mainly about _ .

Article: "In the old days," as one wife said. " The husband was the husband and the wife was the wife." In the past husbands each had their own way of going on. The wives' jobs were to look after them. "The wives wouldn't stand for it nowadays. Husbands help with the children now. They stay more, as well as have more interest, at home." We shall give some examples of what husbands do, firstly in sharing work with their wives; and secondly, in their largely independent domain of house repairs. "Some husbands, as well as doing much of the heavy work in the home, carrying the coals, and emptying the rubbish, act as assistants to their wives for at least part of the day." Mr. Hammond washes up the dishes every night and lays the breakfast for the morning. Mr. Clark said that on Sunday mornings he usually hovered around and read plays aloud for his wife while she did a bit of washing. Mr. Davis polishes the floors and helps to make the beds at weekend, and during weekdays, takes the dog out for one of his twice-daily walks. So it goes on....
Answer: husbands look after their sick children.
The expression "act as assistants to their wives" means that _ .