When did Bill go to the Zoo? With whom did he go there? Whom did he see there? What did he give to the giraffe? Did the giraffe like the banana? Why did they watch the giraffe for a long time?
AZO, когда нужно задать вопрос в прошедшем времени используй вспомогательный глагол DID, а смысловой глагол ставь в первую форму. Good luck!