1.is he attending the lecture of economics now?
he isn*t attending the lecture of economics now
2.are planets going round the sun ?
planets aren*t going round the sun
3.were we working on a new project all the day yesterday ?
we weren*t working on a new project all the day yesterday
4.was sam brown working with clients ,when the boss came to the office ?
sam wasn*t working with clients ,when the boss came to the office
5.shall we still working here in ten years time?
we shalln*t working here in ten years time
6.will he working at this report at 10 o*clock tomorrow?
he won*t working at this report at 10 o*clock tomorrow