Вопрос-make up as many questions to the sentence as possible -ben has just trained in the gym with his friends. -where has ben trained with his friends?

Has Ben just trained in the gym with his friends?
Has Ben or has Jack just trained in the gym with his friends?
Has Ben just trained in the gym with his friends or with his brothers?
Ben has just trained in the gym with his friends, hasn't he?
Who has just trained in the gym with his friends?
What has Ben just done?
Who has Ben just trained in the gym with?