1. Homework was done at home yesterday (+)

2.Homework was not done at home yesterday (-)

3.was Hw done at home yesterday (?)

passive :

1.The building was not built in 1818 (+)

2. The building was not built in 1818 (-)

3. was the building built in 1818 (?)

Active :

1.She/he reported the event (+)

2.She/he did not report the event (-)

3.Did she/he report the event (?)

Passive :

1.The event was reported by Him/her (+)

2.The event was not reported by him/her (-)

3.Was the event reported by him/her (?)