单项选择题
Roman control was only effective in（）.
A.Scotland B.Wales C.London D.The southeast of Britain
单项选择题 The first known settlers of Britain were the（）
单项选择题 About three million people have migrated to Britain since World War ll.They are mainly from the West Indies,India and（）
单项选择题 Northern Ireland is small,but it is significant because of the（）
