Exercise 93. Make the following interrogative and negative. 1. Mary has switched on the light. 2. My relatives have received the parcel. 3. Our grandfather has travelled much. 4. The boy has passed all his exams. 5. The little girl has broken the cup. 6. The director has signed the order. 7. They have seen "Swan Lake" at the Bolshoi Theatre. 8. You have paid for the stamps. 9. The pupils have solved the problem. 10. Robert has come back.​

Hasn't Mary switched on the light?Haven't my relatives received the parcel?Hasn't our grandfather traveled much?Hasn't the boy passed all his exams?Hasn't the little girl brokHasn't the director signed the order?Haven't they seen "Swan Lake" at the Bolshoi Theatre?Haven't you paid for the stamps?Haven't the pupils solved the problem?Hasn't Robert come back?