tv/ movies: Born Feb 27, 1932, She starred in this movie: The Comedians - 1967?

Questions

An aquatic beaver like rodent native to south america but which has become naturalised in parts of europe?

Poet and novelist whose first novel was Lucky Jim?

Inert gaseous element, atomic no 18 discovered by Lord Rayleigh and William Ramsey in 1894?

Unfinished poetic work by Geoffrey Chaucer begun around 1387?

Ornamental hanging light fittings with holders for several candles or electric light bulbs?