Complete the sentences with the correct form of the words in brackets

Complete the sentences with the correct form of the words in brackets
1.VietNam is a..........country,not a developed one.(develop)
2...............are trying their best to protect the natural environment.(environment)
3.Aeromobil is a unique combination of car and airplane,a truly.........(fly).
4.Sir Alexander Fleming was the.....of the pencillin.(discover).
5.Amazing...........discoveries help a lot in improving our lives.(science).
6.Thomas Edison was a wonderful............(invent).
7.The highly......discussion benefited them all.(produce).
8.The famous..........live a fairly simple life.(research).