In this task, you're given an article and an answer. Your task is to generate the question for the answer based on the given article.

Article: My daughter and I collected the empty cans and bottles in our home this morning.We had 6 full garbage bags later so I knew we would be spending a bit more of time at the recycling center.When we got there,a man and his kids were also doing the morning recycling and were using two of the four machines to recycle their plastic and cans.Luckily,we were able to use the 2 remaining machines. Of course,there were others that came,but when they saw the two families with garbage bags full of recycled things,they quickly left.However,one woman came in with just 5 cans and looked as if she was in a hurry.So I stopped what I was doing and let her in to recycle her cans.Of course,she was grateful,and it felt good to let her go ahead of me.But that was not the whole story. My daughter and I continued to work through the bags,but the plastic recycling machine stopped working because it was full.My daughter was left with nothing to do.The other family was still using the other two plastic recycling machines,but it seemed that they were almost done.I just told my daughter we would have to wait until they were done.But the man of the other family came through with another act of kindness.He offered to let us go ahead of him.I was really surprised,because we had more than 5 bottles,but he didn't seem to mind.I happily accepted _ It was great to give and then to get an act of kindness in turn.It was small,I didn't expect it,but it surely brightened up my day.
Answer: Because the woman seemed to be in a hurry.
Why did the writer let the woman recycle her cans first?

Article: While English is getting more important in our schools, Chinese has become popular among foreign kids. But Chinese can be more difficult to learn. At least 16-year-old Piao Chenglong thinks so. "English is easier for me. Chinese characters have too many strokes ," said Piao. "But I want to learn it. I want to study at Peking University when I grow up." Piao is from South Korea. He came to China in 2008. In South Korea, there are more than 300000 Chinese learners like Piao. Some South Korean students begin to learn to write the language on their first day at school. To help students learn Chinese, South Korea holds speaking competitions for high school students every year. Chinese isn't just popular in South Korea. People from all the world want to learn it. The Chinese Ministry of Education says that nearly 130 million people from 85 countries are learning Chinese. This number will be increasing to 800 million in the coming years. In America, Chinese is the second most popular foreign language after Spanish. Some American middle schools have Chinese classes. Students learn to make jiaozi and tie Chinese knots . Some even try to write and draw in Chinese way! People want to learn Chinese because China is becoming such an important country. Foreign countries want to understand China better to help them with business. The Chinese government is also helping the world learn Chinese. It has sent more than 200 Chinese teachers to more than 60 countries in the world. Many more Confucious College will be set up in the world. These colleges will teach Chinese to foreign students.
Answer: Chinese has become popular among foreign kids.
Which of the following is the topic sentence for the text?

Article: I do a lot of hiking.And I can step out of my house and within minutes reach a beautiful forest where I walk for exercise every day.I see many photography subjects such as parrots,snakes,hares,big trees and flowers.There are so many different flowers around my place that once I decided to see how many types I could count in a onehourlong walk,and I counted over 100. Needless to say,as a keen amateur photographer,I always take a camera with me.I have three favorites: a Pentax Optio RZ10,a Sony Alpha 390 and a Panasonic Lumix FZ100.I mostly take the Pentax pocket camera with me.This Pentax pocket camera takes images as good as those from much more expensive Single Lens Reflex cameras.It allows you to get to just 1 cm from the subject,and these images are of astonishing clarity .I can stick the camera right into a flower.And the photo shows fantastic details. The Pentax is also good at taking landscapes.The color is natural and price again the details even of distant objects are great.Sometimes,even when I have one of my other cameras with me,I still just use the Pentax pocket camera.About half of all the images on my website were taken with the Pentax. The Pentax takes quality images in poor light and the zoom works well.You have to work hard to get a blurry shot.This is an especially good feature at parties and gatherings.You get fantastic photos of people.You don't have to wait for them to keep still. Keep this camera in your pocket or in the car.It takes up little room;it's light and you'll never regret it!
Answer: He takes exercise to keep fit.
Why does the author walk through the beautiful forest every day?