input: OPTIONS:
- once a week
- sometimes
- twice a month
- twice a week Now, answer this question: Read the following article and answer the question. Article: Everyone knows that exercise is important.We all need to _ .Doctors say it is good for us.it makes your heart and body _ .When the daytime comes, we must get up. This is the time for exercise. Exercise means doing things with the body. Children who often exercise are more alert .This means they do better in tests and schoolwork than those who don't exercise. There are _ ways to exercise.You can walk, run, swim, skate, or play ball games, Make sure you exercise in the following ways:you have to like what you're doing. Exercise enough but not too much.it's best to exercise _ each week .Thirty minutes each time is enough.Try all kinds of thing until you find one, two or even three sports that feel right for you. You can exercise at _ .They have a lot of equipment there. The equipment will help exercise your arms, legs and other parts of body to make you fit.Some people buy equipment for their homes.But it is very expensive. Exercising can be fun.Friends can exercise together at a fitness center, or they can Play sports together.How do you exercise? Question: The best way to exercise is do it _ . Answer:
A:
output: twice a month

Read the following article and answer the question. Article: Shopping used to mean actually going to shops, but nowadays, you can shop without even leaving your house. Just sit in front of your computer, click your mouse and your things will be sent to your house in a couple of days. November 11this a big day for people who like shopping online. On that day last year, many online stores offered a big discount and free delivery service. The biggest online shopping sites in China,Taobao.com and Tmall.com ,sold things worth 19.1 billion yuan in total. "Goods online are often much cheaper. It also saves me a lot of time. And we often have more goods on many online stores than in shopping malls," Wang Xin, an online shopping lover in Beijing, said to China Daily. She stayed up very late for a lot of cheap goods online. She spent several thousand that day. Another big advantage of online shopping is that it helps people get things from different cities, even different countries, _ . "I like eating duck neck very much and I often buy it on Taobao from shops in Wuhan. It's much more delicious than what our local stores sell, but cheaper," said Zang Xin, a girl in Yangzhou. While enjoying online shopping, many people also have worries, especially for middle school student buyers. Young students are easily attracted by advertisements on the Internet and buy things they don't need. "Middle school students should pay more attention to their study. Searching for things wastes their time," said Jing Chunling, an education expert. "Besides, online shop owners have no idea of the ages of their buyers. Anyone can easily buy things that they want to. Some of goods are even bad for young students such as cigarettes and wine." Question: People worry about students shopping online because students _ . Answer:

OPTIONS:
- have no time to waste and are easily attracted to buy bad things
- may depend too much on online shopping
- haven't met the online store owners
- may buy nothing with a lot of money

Answer: have no time to waste and are easily attracted to buy bad things

Problem: OPTIONS:
- languages
- friends
- cultures
- countries
Q: Read the following article and answer the question. Article: Body language is quiet, secret and most powerful language of all. It speaks louder than words. According to specialists, our bodies send out more messages than we realize. In fact, non-verbal communication takes up about fifty percent of what we usually mean. And body language is especially important, when we try to communicate across cultures. Indeed, what is called body language is so much a part of us that it's actually often unnoticed. And misunderstandings happen as a result of it. For example, different cultures treat the distance between people differently. Northern Europeans usually do not like having bodily contact ,even with friends. And certainly not with strangers. People from the Latin American countries, on the other hand, touch each other quite a lot. So it's possible that in conversation it may look like a Latino is following a Norwegian all over the room. The Latino, trying to express friendship, will keep moving closer. The Norwegian, very probably seeing _ as rude behavior, will keep backing away, which the Latino will in return regarded as coldness. Obviously, a great deal is going on when people talk. And only a part of it is in the words themselves. And when parties are from different cultures, there's a strong possibility of misunderstanding. But whatever the situation is, the best advice is to obey the golden rule: Treat others as you would like to be treated. Question: Misunderstanding of body languages always happens because of the _ . Answer:
Answer: cultures

Read the following article and answer the question. Article: Spam mail is a fact of Internet life. Some of it carries bad things, but the main problem with spam is that it is unpleasant because it fills your mail box with pointless messages. Most email programs have built-in filters that will discover unwanted messages and put them into a junk folder . You can make the filter learn what you consider to be spam or block certain senders. Avoid letting your email address appear on websites--spammers search the Internet for email addresses. Be careful who you give your email address to, and if you need to send out several copies of an email, use blind copy instead to cover the other people's addresses. Delete spam emails without opening them. Signs of possible spam are bad spelling in email headers, strange sender addresses, or emails sent at unusual hours. If you do open a spam mail, never reply to it or click on any pictures it may have. If you receive an unexpected email pretending to come from your bank, credit card company or other suppliers, be very careful. If the email asks you to reply, don't do it! Instead, call up these places or visit their websites. Consider setting up a second email address and keep one address for your personal use and another for your online communication. Question: What is the main problem with spam? Answer:
OPTIONS:
- It's everywhere.
- It carries bad things.
- It's unpleasant.
- It fills one's mail box.

Answer:
It's unpleasant.