Actually my brother has applied to usa And I need your assistance in preparing best answers for interview?

Here I have listed the most frequently asked interview questions along with how you can answer them:
1. Why do you want to attend this university? 

This question tests your knowledge of the university 

 Talk about what makes you and the university perfect for each other 

Give detailed, thoughtful reasons

 Don’t mention things like the nightlife or costs, 

Don’t say anything that indicates you didn’t really put much thought into your decision.

2. Why do you want to study this subject?

This question is very important.

 Explain what drew you to the subject 

Show how the subject  fits in with your career goals or other aspirations 

 Don’t say anything that implies you went with what someone else suggested 

3. What can you bring to the university?

This can be tempting to exaggerate – but try not to go over the top! 

Back up what you say with examples

  Mention activities you’ve been involved in  that show your contribution to the school’s community,

“Why should we offer you a place?” is a similar question, which might be asked 

 In this case, summarize all the key points that make you an ideal student community.

4.How would your friends describe you?

Say something memorable and meaningful, such as 

- you’re determined or motivated

- you’re a natural leader

- a good collaborator

Be honest but focus on your strengths

Pro Tip : Back up what you say with examples

5. What achievement are you most proud of? 

 Mention an achievement which is recent and talk about how it positively affected you. 

 this could be a academic or a non-academic achievement

This activity will show that you achieved this whilst completing your studies.

6. What do you like to do in your spare time?

This is asked to shed some light on your personality.

 Talk about a proactive hobby that you do often – playing a sport

 Mention the skills you learnt 

Avoid bringing up controversial hobbies, that make you sound lazy or easily distracted (such as online shopping or watching Netflix).

7. What is your greatest strength (and weakness)? 

 For the strengths part, it’s tempting to give a clichéd but safe answer, like “I’m a hard worker”. 

But interviewers are looking for something more thoughtful, backed up with examples. 

The weakness side of the question can be difficult, but be honest

Talk about a weakness that you’ve already improved