Надо вставить в предложения was или were Mammoths lived between 2 millions years ago and 9,000 years ago.The mammoths could live in very cold weather. ....... huge and hairy animals. ....... dangerous animals with long tusks. ....... plant eaters.
Mammoths were huge and hairy animals. Mammoths were dangerous animals with long tusks Mammoths were plant eaters