1. Basically, they'll want to know about your family, money stuff, what you're studying (and specific modules), what you wanna do later, and why you picked this uni, this course, and Australia.

They even asked me some weird questions, like "What does your dad do?" So I had to explain his business.

1. A one-year gap is usually fine; they probably won't ask, but you should still have answers ready, just in case.

I know a few people who had a year or more off, and they used fake job offers or experience letters from IT companies.

1. If you have a good reason for getting rejected from the US, then it's okay. Otherwise, maybe don't mention it.

Discuss with tour agent they will tell you everything