tolongg cepat ya...besok di kumpul

1.
+ the teacher is informing about the speaking contest.
- the teacher isn't informing about the speaking contest.
? is the teacher informing about the speaking contest?

2.
+ the farmer is cultivating his rice field.
- the farmer isn't cultivating his rice field.
? is the farmer cultivating his rice field?

3.
+ the students are having an experiment in thr field.
- the students aren't having an experiment in the field.
? are the students having an experiment in th field?