4 Complete the sentences using the correct idiom. • step by step • again and again • on and on • all in all • round and round 1 Mary’s father went on and on about his daughter’s achievements. 2 I've told you again and again that you have to study harder if you want to get your degree. 3 Rather than do all the work in one day, you should do it step by step. 4 The idea has been going round and round in her head all day. 5 All in all I enjoyed the film a lot.