bantu jawab yaa!!! gak tapi paham

1.(+)the teacher is informing about the speaking contest
(-)the teacher is not informing about the speaking contest
(?)is the teacher informing about the speaking contest
2.(+)the farmer is cultivating his rice field
(-)the farmer is not cultivating his rice field
(?)is the farmer cultivating his rice field
3.(+)the students are having an experiment in the field
(-)the students are not having an experiment in the field
(?)are the students having an experiment in the field