11. Fill in the blanks in the sentences.

1. This boy is very curious, he always asks a lot of questions. 2. What's his nationality? — He is Russian. 3. The river separates the two parts of the city. 4. Yuri Gagarin was the first to explore space. 5. The sun rises earlier in winter than in summer. 6. I'm curious to know what has happened to her. 7. Why did the wind suddenly rise? 8. The rainfall lasted for the whole week.