Срочно
Поставить в вопросительную форму
1.l am not a great singer(disj)
2.They have been here. (special)
3.He reads this book in English. (alt)
4.Nobody lcnows about this.(disj)
5.We could stay ther long.(general)

am I not a great singer?have they been here?does he read this book in English? does nobody know about this?could we stay here long?