Какой нужно вставить артикль a, the, or (a, the, or 1. Mississippi is the longest river...

Question

Какой нужно вставить артикль a, the, or (a, the, or 1. Mississippi is the longest river in the USA. 2. Yury Gagarin was first cosmonaut. 3.1 don't like sugar. 4. Pass me salt, please 5. tea is cold 6. There is book on the table. 7. Where is my hat 8. his book is mine. 9. There are two chairs in the room. 10. Look at... blackboard.

Answer 1

2.Yury Gagarin was the first cosmonaut.
4. pass me a solt, please
5.the tea is cold
6.There is a book on the table.
Look at the blackboard.
1,7,8,9,10 - правельные
3 я не понила что за 3.1