改写望月作文写法怎么样？

Test 1
Part IWriting:
A Letter of Gratitude
Dear Mary,
Many thanks to you for your timely help with my preparations for the CET-4.
Originally I only wanted to ask you for some advice on the coming test, as you were so good at English.But to my surprise, you gave more help to me than I had ever expected.You not only gave me some suggestions but also showed me how I could arrange my time and what I should do in each month before the test.Besides, you lent me the book I needed very much when you learned that I had not yet got it.It was really kind and considerate of you.
Your unreserved help enabled me to make efficient preparations and at last encouraged me to pa the test.I really owe all my succe to you.So I would like to extend my heartfelt gratitude again.
Yours truly
Sally
写作思路提示：
第一段：开门见山表达谢意。
第二段：稍加说明感谢原因，并举例说明具体帮助。
第三段：说明帮助所起的作用以及再次感谢。
Test 2
Part IWriting:
Why Do People Keep Pets?
With the increasing improvement of their life, many people are wild about keeping pets.Nowadays, it is very common that we see people taking a walk leisurely with their dear pets along the streets towards evening.At social gatherings people who like keeping pets exchange their experience on taking care of pets.One is not
surprised if a pet costs as high as one’s annual earnings.However, why do people keep pets?
The answer to this problem involves many factors.First, pets make us happy and far from lonely as human companions.Second, pets give us a sense of being important and needed because they depend on us for home, food and drink.Besides, a pet in a family keeps us in touch with the more natural, animal world.
However, it is my belief that some problems can’t be ignored since the growing number of pets may leads to hygiene problems.In many public places pets should be forbidden to enter because they are likely to spread disease and interfere with other people.In short.we should always keep our environment clean at any time.
写作思路提示：
第一段：根据提示简单说明养宠物的现象，提出问题。
第二段：对问题做简单分析。
第三段：简述自己的看法。
Test 3
Part IWriting:
Private Tutoring
A recent investigation shows that private tutoring is “in” and that an increasing number of college students choose to be tutors in their spare time.
Nowadays, on the one hand, many parents are attaching greater importance to education for their children.However, many of them are helple when their children meet with difficulties in study.Private tutoring may be the better solution.On the other hand, those students who work as tutors usually come from poor families or have financial difficulties, they want to make money for themselves and relieve the burden of their parents.In addition, some students expect to be aociated with society by working as tutors.