Make the following sentences interrogative:

1. The play begins at half past seven. 2. There are some people talking loudly in the theatre. 3. Some people smoked cigarettes in the cloak-room. 4. Nick is speaking quietly to Ann. 5. Ann and Nick will come home from the theatre before twelve o'clock. 6. There is a girl in a green dress on the stage. 7. Ann and Nick like to go to the theatre. 8. I met my friend in the interval.