Исправить ошибки в предложениях : 1. he have been to pskov. 2. they have read the book last year. 3. ben has never played tag, hasn't he ? 4. did he visited his granny ? 5. who did whatch this film ?

1. He has been to Pskov.
2. They read the book last year.
3. Ben has never played tag, has he ?
4. Did he visit his Granny ?
5. Who watched this film ?