This questions[sic] are part of my study about marketing.
So this is a college or high school homework assignment then. In my opinion, your teacher has done a poor job of showing students how to conduct a survey such as this. I say this because the way that your questions are written are too absolute. They need to be more in the form of Likert style ranges or in some sort of AHP or conjoint analysis format.
Also, to come to a web site such as this, where darned few Japanese teen girls and middle aged men frequent, is not hitting the target audience you need. Perhaps looking at how Coca Cola did their original marketing for Japan would help. (That's something a marketing teacher should have advised.)
So, any answers I may give you are based on me being a middle aged white male from the U.S. and living in
Hokkaido, not a Japanese person in the demographic you have chosen. Keep that in mind.
Does teenagers or middle age workers in Tokyo like import beverages better than local?
Probably local, since Japan is a pretty insular country even nowadays.
Are they price concern, health concern, or taste concern?
Yes to all three.
How is the lifestyle of Tokyo teenagers and middle age workers?
Too broad a question to answer.
Do they often consume juice?
What is "often"?
Is juice considered as healthy drinks?
There are fruit juices, vegetable juices, and various drinks containing fruit that are labeled as healthy for various marketing reasons. Some fruit juices contain 10-100% fruit, so there is another variable. Japan has tons of bottled tea and canned coffee that vastly outnumber fruit or vegetable juices, too. All of these things make it hard to answer the question unless it is in a Likert style.
What is the most famous juice brand in Tokyo?
Kagome, perhaps.
Which target group is the one that consumes juice the most in Tokyo?
Define target group options so respondents can give you answers better.
Or any other information about the consumer behavior of teenagers and middle workers toward juice in Tokyo!
I suggest you do more research on this and not ask any respondents to answer this.
How often do you drink fruit juices?
What is your favorite fruit flavor?
How much juice do you prefer to drink at once? (100mL, 300mL, 500mL)
There is also a range of questions you could ask about labeling and language and how consumers respond to advertising (foreign people vs. Japanese in commercials, for example).
The survey also needs to have a section on demographics (age, gender, location within Tokyo, for example).
But your teacher should have suggested these things anyway.