Native speakers – no offence meant- are likely to sniff at this kind of dictionaries, but for non-native learners, they can really be an enormous help.
Standard dictionaries can, of course, provide the learner with other very important information about a word/ expression and they can even exemplify with a couple of sentences. Well, it is not enough. Sometimes, what you need to see is how the word collocates with others and how it is used in different contexts. That’s why when I found this dictionary, I immediately thougth: “I need to share this”.
Over the years, I have recommended others like sentenceyourdictionary , but https://sentencedict.com/ is a game-changer. In this dictionary, you can write a combination of words like “potable water”,”natural resources” or “take for granted” and it will show you- obviously depending on the chunk of words- lots of examples you can study and use.
Hope it helps you pass your exams with flying colours!