Make the sentences interrogative:
1) She is always attentive in class. (General question)
2) Mary will buy you a dictionary. (Tag  question)
3) They were at the theatre last week. (Special question)
4)Kate known English very well. (Alternative  question)
5)She was cooking dinner at 5 o'clock. (Negetive-Interrogative form)  

1) Is she always attentive in class?2) Mary will buy you a dictionary, won't she?3) When did they go to the theatre?4) Does Kate know English or German very well?5) Was she cooking dinner at 5 o'clock?She wasn't cooking dinner at 5 o'clock.