music: 70's Chart Toppers: Name The Artist: Love On A Two-Way Street?

Questions

Leo Argyle, Rachel Argyle and Donald Craig are all characters from which Agatha Christie novel?

'Look at me, I'm as helpless as a kitten up a tree' begins which Burke & Garner song?

Give the year in which Boris Becker was the Men's Wimbledon champion and Pol Pot resigned as Khmer Rouge commander?

In mythology, of where was Oedipus the King?

Who was the American religious leader who founded the Christian Science Movement?