Sarah and Janet have been friends since they     1     (start) school. They do everything together: study, read, watch TV, surf the internet, play sports and listen to music.     2     one of them has a problem, she can ask the other     3     help. When Sarah was in the third grade, some of the other students made fun of her     4     she was shy. Janet told the other students to stop     5     (make) fun of Sarah, and she helped Sarah overcome her shyness. In the     6     (five) grade, Janet had     7     (difficult) in doing her maths exercises. She studied hard,     8     she just couldn’t understand the homework. Sarah helped Janet with her homework and     9     (patient) explained every exercise to Janet. After six months, Janet did much better and even got     10     "A"in the maths exam.

Do you find that so many emojis (表情符号) are used in your online communication? Has "Happy Birthday" become a cake with lighted candles? Since they were invented     1     the 1990s in Japan, emojis, meaning “picture characters”,     2     (occupy) the world. According to a UK-based mobile technology company, 6 billion emojis     3     (use) in text messages are sent around the world every day through smart phones. Emojis are regarded as a new kind of     4     (express). Behind the popularity of emojis is the rise of young people     5     welcome new technology and new     6     (invention). And the reason why young people as well as others love emojis is that they show meaning     7     (beautiful). When young people are asked     8     makes the generation unique, they put “technology use” first.

Now emojis seem to be in much     9     (wide) use than written words. As     10     result, people begin to doubt whether it has made up a too large part in our online communication.

There is a growing interest in rock climbing. So far there     1     (be) an improvement in technology and techniques to perform it. The sport is     2     (attract) to a growing number of people. Although rock climbing has risks and physical challenges, people still have several reasons for taking it up.

Some sportsmen feel that rock climbing can never become boring. This is because they have different places to go climbing. Additionally, there are several challenging routes to climb. If they are not satisfied     3     walls at their location, they may go elsewhere     4     (experience) other challenging walls.     5     (obvious), it offers great fun and adventure to people when they go high up on walls. When they push themselves beyond the expected limits (极限), they get     6     sense of achievement. Many people feel that rock climbing also gives them a feeling of freedom, as they can go wherever they want.

There are many sportsmen     7     also recognize rock climbing as a physical challenge where they always move up the levels. After     8     (cross) a set level, they move to the next and then to the next. And they can always give a fight to their previously (先前地) achieved     9     (goal). It all depends on their physical     10     (fit) and skill levels.

Do you like travelling abroad? Almost everyone says yes. And     1     (stay) healthy and safe while travelling can help to ensure that your trip is a happy and     2     (enjoy) one. If you are travelling abroad, here are some tips you need     3     (make) your trip much easier.

First of all, make sure you have applied     4     a visa. Also, before you go, fill in the emergency information page of your passport! Make two copies of your passport identification page. This will be     5     (extreme) helpful if your passport     6     (steal). Leave one copy at home with friends or relatives. Carry the other with you in     7     separate place from your passport. Get     8     (you) familiar with local laws and customs of the countries to     9     you are travelling. Do not accept packages from strangers. Do not carry too much money. If you make enough     10     (prepare), you will certainly have a good time!

Kierman was born in Sydney, Australia, and grew up near the sea. For more than 40 years, he raced in international sailing    1     (competition)．

While taking part in     2     important race in 1987, Kierman began to notice the huge amount of rubbish in the world's oceans. He decided to do something about it. He organized a community event called “Clean Up Sydney Harbour”. On Sunday, January 8, 1989, more than 40,000 volunteers came out     3    (clear) away rubbish. The next year, Kierman made the clean­up a national event,     4     turned out to be a huge success. Across Australia, about 300,000 people spent the day    5     (improve) their local environment. Since then, “Clean Up Australia” has got     6     (big) year by year. In 2002, for example, 800,000 people     7     (clean) up almost 15,000 tons of rubbish from Australia's beaches, parks and streets.

    8    (inspire) by the success of his project, Kierman started an even bigger program.     9     the help of the United Nations Environment Program, he introduced “Clean Up the World” to other parts of the world. “Clean Up the World” has been growing     10    (rapid) and his wonderful idea has now spread from one city to the whole world.

Have you ever imagined singing together with hundreds of other people while you are at home alone? You can do this in a virtual choir, where members record themselves while     1    (perform) alone on video. These videos     2    (upload) onto the Internet and then put together into one video that can be seen online.

The virtual choir was the idea of Eric Whitacre,     3     award-winning composer and director. Having received a master's degree in     4    (music) composition from the Juilliard School in New York, he applied himself to creating compositions,     5     became quite popular among choirs and singers. This led to the creation of the virtual choir. His first virtual choir, “Lux Aurumque”, had 185 singers from 12 different     6    (country). Since then, the virtual choir has become a worldwide phenomenon and proved to influence the lives of many people     7    (positive).

A virtual choir helps connect ordinary people together, enabling them     8    (add) their voices to those of other individuals and become part of the global community. In addition, it is a wonderful way     9    people around the world to sing with one voice and thus make the world an even     10    (good) place.