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1. I am confident of teaching English the easiest way

2. In the business world, we shouldn't lose our precious customers so although I am very angry with them, I will serve them nicely and kindly by smiling at them.

3. First, as a teacher, I will have about 20 students and I will learn how to make them satisfied. I will learn what they want and need.

After 6 months, I will have 100 students so I will need to use a microphone.

Finally, in 5 years, I will have over 1 thousand students. That is my aim.
Comments  
1. I can't get your meaning. Is it: I am confident that teaching English is the easiest way.
2. In business, we cannot lose our customers although they make us angry. We should serve them nicely and kindly by smiling at them.

3. This sentence is grammatically correct but the meaning is so suck Emotion: smile)
These sentences don't really make good sense and logic in my opinion because of the construction.

I'd comment on two and say it this way. The third one is too much to fix.

1) I am confident that I can teach English in a way that is the easiest to understand.

2) In business, we can't afford to lose our customers/ clients although they sometimes make us angry.
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I feel embarrased that number 3 has too many mistakes to fix it... : (

Thank you anyway...
You don't need to feel embarrassed in trying to improve your English, or anything for that matter. My comment about # 3 wasn't because it was grammatically wrong, but about the way it sounded and constructed. I highlighted the parts which I thought were a bitawkward and redundant .

3. First, as a teacher, I will have about 20 students and I will learn how to make them satisfied. ( what do you mean by satisfied?) I will learn what they want and need.

After 6 months, I will have 100 students so I will need to use a microphone.

Finally, in 5 years, I will have over 1 thousand students. That is my aim. (goal is a better word)

Base on your sentence, I took the liberty to reword it:

MY goal as a teacher is too start a class with about 20 students. I will try to learn the need of each student and be a ble to provide help for each one. I 'll hope to have a 100 students in 6 months. By then, I probably need a microphone as my voice may not reach all the students. My ultimate goal is to open a school which can accommodate 1000 students.

I appreciate your effort thank you very much!
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We like to matching clothes since my girls were still baby

anonymousWe like to matching clothes since my girls were still baby

We have liked matching outfits ever since my girls were babies.