1) Have you ever attended lectures by Professor Hopkins? - No, I have never attended them. But I’ve attended lectures by Professor Littlejohn.2) Has she ever visited Rome? – No, She has never visited Rome. But she’s visited Madrid3) Have you ever seen this picture? – No, I’ve never seen it. But I’ve seen its reproduction.4) Have you ever received a letter from her? – No, I have never received a letter from her. But I’ve received a postcard.5) Has your friend ever travelled abroad? - No, he has never travelled abroad. But he’s travelled a lot in this country.6) Have you ever driven a big car? – No, I’ve never driven it. But I’ve driven a bicycle.