Many of us try to change bad habits quickly, and if we are not successful straight away, we often become pessimistic and give up. In fact, the most successful way to change is not     1     （sudden）, but over a period of time.     2     the Chinese philosopher Lao Zi wrote, “A journey of a thousand miles begin with a single step.” One step seems small, but it is essential. To reach     3     goal of change, a person must show some discipline and repeatedly take many small steps. After all, it is not easy to break bad habits.

Li Hongwei’s dream is     1     he can be a famous scientist just as his grandfather. The reality     2    he has to face is     3    he is not very intelligent. It looks as     4     he has no chance to realize his dream.

His grandfather tells him     5    persistence and diligence is     6    it takes to be a real scientist. This is     7    the search for truth is difficult and it often costs much time. It seems     8    many young people can't bear the boring life of doing research. That is     9    Li surpasses others. His grandfather's suggestion is     10    he should spare no effort to learn as much knowledge as possible and prepare himself well for the future.

The skin is an essential part of your body. It is the     1    (large) organ of your body,     2    can not only protect you against diseases, toxins and the sun’s rays,     3    also prevent your body from losing water. Also, it tells you    4    things are too hot or too cold, and gives you sense of touch. So if your skin gets burnt, it can be very serious.

People can get burned by many things, such     5    hot liquids, steam, fire, radiation, the sun, electricity or     6    (chemical). Burns     7    (divide) into three types,     8    (depend) on which layers of the skin are burnt.

First aid is a very important step in the treatment of burns. If you see someone get burnt, first take clothing off the burnt areas unless it is stuck to the burnt skin and cool the burnt area with cool running water. Then dry the area     9    (gentle) and cover the area with a dry, clean bandage in order not to get it infected. If the burn is serious,     10    victim should be sent to a doctor or hospital at once.

Friendship is a kind of treasure in our lives. It is actually like a bottle of wine. The longer it    1     (keep), the sweeter it will be. It is also like a cup of tea. When we are thirsty, it will be our best     2     (choose), but when we have enough time to enjoy ourselves, it is also the most fragrant drink.

However, in this fast-developing modern society, the reality is not that. More and more people forget     3     (enjoy) the beauty of life and the beauty of friendship; they work hard in order to gain a     4     (high) position in society and to earn more money for their work. Of course, we don’t deny that it is important to find a better place in our     5     (life), but we wish more and more people could pay a little more attention     6     themselves and their friends. All of us have to spare some time for personal lives. We have to find the chance to express our emotion and love. When     7     (stay) with our friends, we can release ourselves     8     (complete). We can do whatever we want, we can laugh together, talk together,     9     even cry together. I should say that being together with our best friends is the most wonderful moment of our lives.

As we know, we would feel lonely if we didn’t even have a friend, but it doesn’t mean we could depend on our friends all the time. There is     10    famous motto saying that “A friend is like a quilt with cotton wadding, but the real thing that keeps you warm is your own temperature.”

Dave comes from a rich family. He is a friend of     1    (me). His parents always give him lots of pocket money. But Dave thinks his parents work very hard and that     2    is not easy for them to make money, so he always tries his best     3    （save） more money. He has some good ways to do it．

Dave likes reading and he has lots of books．He tells me he often buys     4    （book） online because they're less expensive. And when he has free time, he often goes to bookstores or libraries to do some reading．

Dave has a bike. He usually goes to school by bike instead of       5    （take） the bus. Sometimes when it rains or snows, he walks. These two ways help Dave keep     6    （health） and save some money．

Dave brings a bottle of water to school every day. When other students drink juice , he    7    （enjoy） his water. He thinks water is the     8    （cheap） and the best drink．

Some students think Dave is mean（吝啬的）,     9    Dave doesn't care at all. "Our parents almost pay for everything for us. We shouldn't waste money buying things     10    are not needed．" Says Dave．