1
he was going home at 4:00 yesterday
was he going home at 4:00 yesterday
he wasn't going home at 4:00 yesterday
2
walto was playing basketball at 6:00 last Sunday
was walto playing basketball at 6:00 last Sunday
Walto wasn't playing basketball at 6:00 last Sunday
3
she was learning the poem for an hour
was she learning the poem for an hour
she wasn't learning the poem for an hour