Fill in each numbered blank with one suitable word or phrase.

In the 1960s, The Beatles were probably the most famous pop group in the (1) _____world. Since then, there have been a great many groups that have (2)____  enormous fame, so it is perhaps difficult now to imagine (3) ____ sensational The Beatles were at that time. They were four boys from the north of England and none of them had (4)______ training in music. They started by (5) _____ and recording songs by black Americans and they had some success with these songs. Then they started writing their (6) ______ songs and that was when they became really (7) ____. Beatles changed pop music. They were the first pop group to achieve great (8) ____ from songs they had written themselves. After that it became common for groups and singers to write their own songs.

In the 1960s, The Beatles were probably the most famous pop group in the (1) _____world.