1(+) We are working on the new show right now
(-) We aren't working on the new show right now
(?) are we working on the new show right now?
2(+) I'm talking on the phone at the moment
(-) I'm not talking on the phone at the moment
(?) Am I talking on the phone at the moment?
3 
(+) he is  runing very fast 
(-) he isn't  runing very fast 
(?) Is he runing very fast ?
4(+) Julia is baking a chocolate cake at the moment.
(-) Julia isn't  baking a chocolate cake at the moment.
(?) Is Julia baking a chocolate cake at the moment?

5
(+) Tony and Kaity are helping the teacher right now
(-) Tony and Kaity aren't helping the teacher right now

1, - we aren't working on the new show right now
   ? are we working on the new show tight now
2, + i'm talking on the phone at the moment
    ? am I talking on the phon at the moment
3, + he is runing very fast
    - he isn't runing very fast
4, - Julia isn't baking a chocolate cake at the moment
 ? Is Julia baking a chocolate cake at the momonent
5, + Tony and Kaity are helping the teacher right now
     - Tony and Kaity aren't helping the teacher right now