The family in Britain is changing. The once typical British family headed by two parents has undergone【B1】______changes during the twentieth century. In particular there has been a rise in the number of single-person households, which【B2】______from 18 to 29 percent of all households between 1971 and 2002. By the year 2020, it is【B3】______that there will be more single people than married people. Fifty years ago this would have been socially【B4】______in Britain. In the past, people got married and stayed married. Divorce was very difficult, expensive and took a long time. Today, peoples【B5】______on marriage are changing. Many couples, mostly in their twenties or thirties, live together without getting married. Only about 60% of these couples will【B6】______get married. In the past, people married before they had children, but now about 40% of children in Britain【B7】______unmarried parents. In 2000, around a quarter of unmarried people between the ages of 16 and 59 were living together in Great Britain. Before 1960 this was very【B8】______. People are generally getting married at a later age now and many women do not want to have children immediately. They prefer to【B9】______their jobs and put off having babies until their late thirties. The number of single-parent families is increasing. This is mainly due to more marriages【B10】______divorce, but some women are also choosing to have children as a single parent without being married. 【B1】