Audio books are recordings of books read aloud. In recent years, their sales have (1) ... rapidly, with many more books becoming available through streaming services. In fact, many titles often appear online at the same time as the printed books are published. There are various reasons for their (2) ... popularity. Firstly, it is possible to listen to an audio book while relaxing or doing household tasks like washing and cleaning, when travelling to school or work, and doing exercise or sport while you are on your (3) .... Many people, of course, would like to read more, but simply do not have enough time; here, too, audio books can (4) ... a huge difference. Whenever somebody has a few moments to (5) ..., they can switch on their relevant device and settle down to listen to the next chapter of their favourite book.