You should use "difference" instead of "different". You should use "Most of the Chinese people" because you have to use "the" to refer to the group of "Chinese people".

Yes they have the exact same meaning. :"对不起！" : "没关系！" OR "没问题！"

They have the same meanings but those ending wit 里 are more often used. Those ending with 儿 are considered informal.

Let me tell you that I will be careful for the rest of our lives unless I am asked not to.

1. My grandfather grows a great amount of crops in his garden. 2. Fresh fruits and vegetables help to prevent different diseases, because they have a high content of vitamins. 3. Infants like to play cards, they adore card tricks and building of card's houses. 4. He was dedicated to Knight. 5. A vase tumbled onto the floor and broke, because it was very brittle. 6. He is a liar because his words contradict the truth. 7. I bought a packet of tissue, I am going to sew a new dress, it will be luxurious. (???) 8. I feel sore in my muscles, because I went to the gym yesterday.

The correct way should be "What do you want to be when you grow up" (future) or "what did you want to be as you grew up" (past)

The first one is a statement. The second one can be a statement or question.