Match the numbers to the letters and write sentences using relative pronouns or adverbs.

1. We went to Paris, which is the capital of France. 2. A barometer is an instrument that measures atmospheric pressure. 3. 1799 is the year when Napoleon came to power. 4. This restaurant is the place where we had dinner last night. 5. An astronomer is a scientist who studies celestial bodies. 6. An octopus is a sea creature that has eight tentacles. 7. The last time when we met was two months ago. 8. This is the reason why I decided to stay at home.