10. use the right prepositions on or in10. use the right prepositions on or in. 1. history of russia 2. 3.an new discoveries 4.good 5. life of indians 6.an

1. books on the history of Russia
2. lessons on Chemistry (можно in)
3. an article on the new discoveries
4. good marks in English
5. notes on the life of Indians
6. an examination in Mathematics