Exercise 3. make the sentences interrogative. 1. we have some questions to ask you. 2. we have just discussed this problem. 3. father has got a lot of technical books in his study. 4. our students have dinner in the canteen. 5. he had finished reading the book by last sunday. 6. the students have to work hard. 7. he has to finish his experiment in 2 hours. 8. you will have to stay here for 10 days.
