The ielts website has all of that covered already https://ielts.org/take-a-test/preparation-resources

Cash. Every transaction will be online, so it can be tracked

Amsterdam has been described as an adult playground (and not in a good way), so that’s what I think of

Kaas - Dutch

I had my girlfriend sleep over when I was 17 (40 now). Besides that, what’s with the insinuations in your text? A little trust towards your son might go a long way further than insulting him