Problem:OPTIONS:
- There was too much smoke in the sky.
- There were too many factories in the city.
- People burnt too much coal in the houses.
- The city was too big for the cleaners to clean.

Read the following article and answer the question. Article: London used to be "foggy" for the same reason that cities like Beijing or Chongqing are "foggy" today. The "fog" was in fact smog, a mixture of smoke and fog. In other words, it was made by air pollution. In London, some of this pollution came from factories, but much of it came from the coal that people burnt in their houses to keep warm during the winter. By the 1950s, London's smog problem had become so bad that the government decided to do something to clean the air. A new law was made and nobody could burn coal in any British city. Within a few years, the air became much cleaner. There were no more " _ ". Many Chinese cities now face the same sort of problem with air pollution that London faced 40 or 50 years ago. However, this problem is more difficult for Chinese cities to solve. One reason is that more of the pollution comes from the factories, rather than from coal burnt in people's houses. If these factories were closed, this would harm the economy and lots of people would lose their jobs. Another reason is that changing from coal to cleaner fuel , like gas, is quite expensive. However, the air in many Chinese cities is becoming cleaner and cleaner, as the government and people pay more and more attention to cutting down pollution. As a result, there are fewer "pea-soupers" in Beijing than there used to be. Question: What was the main reason for air pollution in London? Answer:
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A: People burnt too much coal in the houses.

Problem:OPTIONS:
- For about 10 minutes.
- For about half an hour.
- For an hour.
- For an hour and a half.

Read the following article and answer the question. Article: My name is Daniel. Let me talk about my day. I get up at 6:30 a.m. and I read English for about half an hour. I eat breakfast at about 7:10 a.m. I go to school by bus at about 7:40 a.m. My school starts at 8:20 a.m. In the morning, I have three lessons. I like English best. At 11:20 a.m., we have lunch at school. After lunch, on Monday and Thursday, I go to the school library. On Tuesday and Friday, I go to the art room. And on Wednesday, I go to English Club. We have our class at 2:30 p.m., and we only have two lessons in the afternoon. School is over at 4:00 p.m. We can go home on the school bus. We always have a good time at school. Question: How long does Daniel read English in the morning? Answer:
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A: For about half an hour.

Problem:OPTIONS:
- Give presents.
- Ask for money.
- ask for presents.
- Give money.

Read the following article and answer the question. Article: On Christmas Eve, the night before Christmas Day, children are very happy. They put their stockings at the end of their beds before they go to bed. They want Father Christmas to give some presents. Father Christmas is a very kind man. He comes on Christmas Eve. He lands on top of each house and comes down the chimney into the fireplace and brings children a lot of presents. Christmas Day always begins before breakfast. Children wake up very early. They can't wait to open the presents in their stockings. Then they wake up their parents and shout 'Merry Christmas!' Do you know what Christmas means? Christmas Day is the birthday of Jesus Christ. When Christ was born, many people gave him presents. So today, people still do the same thing to children. Question: On Christmas Day, what do people often do to children? Answer:
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A: Give presents.

Problem:OPTIONS:
- Animals In the Zoo
- Animals And People
- Lovely Animals
- Happy Animals

Read the following article and answer the question. Article: Many people may think that animals in the zoo are happy, free and lucky, but most of them are sad. Do you know why? Animals like tigers, lions, and bears usually live in forests or mountains. They run, jump, play with their children and catch small animals for food. But now they have to stay in cages ,small rooms in the zoo. They don't have to find food by themselves because the zoo keepers feed them. They do nothing but eat, walk and sleep every day. Their life in the zoo is quite different from that in the forest because they are not free. Maybe they miss their mothers and their friends, in fact, they feel lonely. Question: Which is the best title? Answer:
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A:
Animals In the Zoo