I called you yesterday evening, but nobody answered the phone. –Oh, I ___ a walk with my parents at that time.

Have you heard of the big fire last night? –Yes. The firemen struggled against it for about 35 minutes and _______ the fire at last.

It is hard to imagine what life __________ in 100 years.

Koalas sleep __.[ ]

My family are all _____ vacation now.[ ]