Verified answer

1. My friend has learnt German and now she is studying French.

2. He has lost his key and cannot get into the flat.

3. They haven't looked at the newspaper today so they don't know the news.

4. At last you have come. We have been here for an hour.

5. As far as I know, you have made good progress in English.

6. He has been angry with them lately. What has happened to him?

7. What are you looking for? — I have lost my glasses and want to find them before it gets dark.

8. She has travelled a lot and has seen many countries. She is going to Japan in a few days.