Rewrite the sentences without changing the meaning.
1.They will use biogas for cooking soon.
-- Biogas.........................................
2.She didn't drink too much although she was thirsty.
-- Despite........................................
3.What is the distance between Nha Trang and Hue ?
-- How far...................................?
4.Linda was my best friends,but we aren't friend any longer.
-- Linda..........................................