78.4 Complete the sentences. Use: nobody / no-one / nothing or anybody / anyone / anything 1 That house is empty. 2 Jack has a bad memory. He can't remember 3 Be quiet! Don't say 4 I didn't know about the meeting. 5 'What did you have to eat?' 6 I didn't eat 7 Helen was sitting alone. She wasn't with 8 I'm afraid I can't help you. There's 9 I don't know 10 The museum is free. It doesn't cost 11 I heard a knock on the door, but when I opened it, there was 12 The hotel receptionist spoke very fast. I didn't understand 13 'What are you doing tonight?' 14 Sophie has gone away.