Используйте правильную видо-временную форму английского глагола и раскройте скобки.
1) This cow (not give) milk, it (be) sick
2) Soon we (vaccinate) the cattle.
3) The veterinarian (not vaccinate) the herd: the animals (be) sick
4) These horses (become) sick last week
5) The assistant (begin) to vaccinate the cows last Friday.
6) We (mot have), a lecture in Anatomy tomorrow.
7) We (be) students and we (not treat) animals,