As frases devem ser transformadas em INTERROGATIVA:

1) Why has she been motivated to work hard?

2) When have you placed your order?

3) Why have they called his mother?

4) What have they been consistent at?

5) Why was she fired?

6) Do they have good nature?

7) Why did you buy this tool? (Poderia ser "why have you bought this tool?") 

8) Did they finish their homework?

9) Have they improved at their driving skills? (ou "did they improve their driving skills?")

10) Have they been benefited with the tax return this year?

11) Does she have benefits working for that company ?

12) What is he addicted to?

13) Why do you believe she was guilty?  

14) What scholarship did you win?

15) Why didn’t they buckle their seat belt?

16) Do you prefer to walk barefoot (on the beach..at the park...aqui poderia ser qualquer lugar)

17) Was he catching the balls during the game?

18) Where could she see her reflection? 

19) Why was she crying?

20) Where were they seeking for his research? 

21) How often do you talk during the class?

22) When did they eat the whole cake?

23) Was the experience you had, priceless?

24) Is it worthy to study more hours? 

25) How often does she ask about her dog?

LEMBRANDO QUE ESSAS RESPOSTAS SAO APENAS UMA BASE, POREM A MAIORIA DAS FRASES PODE TER VARIACOES. 

Corrija apenas a estrutura gramatical no caso, se esta no passado, presente, forma de verbo ou preposicao utilizada ok?