The incomes of skilled workers went up. ____, unskilled workers saw their earnings fall.

 He was the last man I wanted to meet, but I      managed to smile at him.

 Nature reserves are very important for preserving many animals and plants, which would _______ run the risk of becoming extinct.

He has decided to settle _____ in France because he is fond of the romantic country.

 As a scientist, Madam Curie devoted herself ________ to her research and that was why she was given two Nobel Prizes.