71.   As she smiled, her mouth pushed her cheeks into a series of tiny wrinkles.

72.   As the years had progressed a series of petty crimes had seen him in remand homes, borstals and finally prison.

73.   As they enter their caves, they start producing a series of high-pitched clicks.

74.   As well as an exhibition of food-related products, the show will include a series of seminars covering quality assurance and customer relations.

75.   As well as his teaching, and a planned series of concerts in the autumn, Mozart was also working on a new opera.

76.   At home, a series of scandals has convinced voters that the government is no longer listening to them.

77.   At the age of seven Mayall began work in a series of textile factories.

78.   At the end of each chapter there is a series of exercises designed to help the learner.

79.   At the same time there are a series of practical problems affecting all consultation with users.