Ответ:

11. What does Vicky do? She is a researcher. She works at Kingston University.

12. Why is Rick wearing a tailcoat? Because he is performing in the concert hall today.

13. I usually walk home from school but today my friend's mum has given me a lift.

14. Polly's hair has grown since I last saw her.

15. Has Laura ever acted in a school play? As far as I know she...

16. Are they visiting you next Sunday?

17. My grandma bakes delicious cheesecake, but now she is making a chocolate cake.

18. Teresa has exercised a lot recently. She looks perfect.

19. Plants use sunlight to get energy.

20. I have not got up yet. I am not working today so I can stay in bed longer.

21. James has been learning French since he was in high school. He speaks fluently now.

22. The wind has blown the leaves off the trees today. (можно The wind has been blowing...)

23. We have lived in this house since I was born. (можно We have been living...)

24. Where do you keep your toys? In a wicker basket.

25. Rita has been typing letters for two hours. She has already typed four.

26. Tommy has lost  his car keys. He's furious about it!

Объяснение: в 15 во втором предложении не дан в условии глагол для вставки.