we ..... watching a televison program now => are not
we ....... watch televison every day  => do not
they ..... study their lessons after class => do not
they ......studying their lessons right now => are not 
it ....... raining very hard right at the moment  => is not
it ........ rain very much during the summer => does not
Mr . johnson ...... eating his lunch now => is not
Mr . johnson ....... always eat at the place => does not
l ......... see any students in that room  => do not
l .......... hear anyone in the hall now => do not

we ...............aren't..................... watching a televison program now 
we ....................don't................... watch televison every day 
they ..............don't................. study their lessons after class
they ................aren't...............studying their lessons right now
it .....................isn't..................... raining very hard right at the moment 
it ......................doesn't.................. rain very much during the summer 
Mr.John son ..............isn't.................. eating his lunch now 
Mr.John son ...............doesn't.................... always eat at the place 
l ....................don't................... see any students in that room 
l .....................don't................ hear anyone in the hall now

​we aren't watching a televison program now 
we dot't watch televison every day 
they don't study their lessons after class
they aren't studying their lessons right now
it isn't raining very hard right at the moment 
it doesn't rain very much during the summer 
Mr . johnson isn't eating his lunch now 
Mr . johnson doesn't always eat at the place 
l don't see any students in that room 
l don't hear anyone in the hall now

we ...aren't.. watching a televison program now 
we ....don't... watch televison every day 
they ..don't... study their lessons after class
they ..aren;t....studying their lessons right now
it ...isn't.... raining very hard right at the moment 
it ....doesn't.... rain very much during the summer