Mark the intonation in the question tags. Then listen and check. Practise saying the sentences in pairs.
1. I can’t find my key. You will helo me find it, won't you?
2. People have destroyed so many forests, haven’t they?
3. I haven't been to Yellowstone. I think it’s a farnous natural park in the USA, isn’t it?
4. I don‘t know much about Sam. He didn't graduate from university, did he?