Misc: How many Oscars did actress Greta Garbo win?

Questions

What was a number one hit for Shirley Bassey?

Who was found dead in a London flat?

Which boy band had three number ones in a year?

Which actress played Hugh Grant's love interest in Four Weddings and a Funeral?

At Fawlty Towers in Torquay, Manuel was Basil Fawlty's incompetent waiter. But where did he come from in Spain?