1. He bought this book three days ago. So he has had this book for three days.2. Have you ever been to Hangzhou?Yes, I went there a month ago.It is a month since I went there last.3. I haven't seen him since 1966.It is 45 years since I met him last.4. My father has been working in America for four years.He went t...
He has been keeping the book for 3 days.Have you ever been to Hangzhou? Yes,I went to there last monthI.I have never seen he SInce 1666.My dad has been working in the USA for...
