Cambridge English
This is a University of Cambridge department, and as part of an institution with a global reputation for academic quality, they generate insights based on research and expertise. Combining all of this ensures that their one-of-a-kind strategy satisfies learners' real-world demands through inclusive and accessible products and services. If you've been learning English with textbooks, you've most likely used a Cambridge English book at some point. Cambridge English, in addition to creating great classroom study material for students and teachers, offers a number of free tools to help you improve your English skills.
Cambridge English is also the firm that established the Cambridge English tests, which people from all around the world take for jobs or immigration. The Cambridge English tests, like most exams, include a listening component, which you can prepare for by working through some of the listening activities on their website. Every lesson is assigned a degree of difficulty based on the Common European Framework of Reference for Languages (CEFR). These include a variety of exercises, such as gap-fills and comprehension questions on the audio material, to help you develop your listening skills and vocabulary. Furthermore, because the tasks aren't overly particular, you can use them for Cambridge English exam prep or general listening practice.
Website: cambridgeenglish.org