Они не были в Крыму в прошлом году.

Они не были в Крыму в прошлом году. Они были в Киеве

Результаты (английский) 1:

They were not in Crimea last year. They were in Kiev

Результаты (английский) 2:

They were not in the Crimea in the last year. They were in Kiev

Результаты (английский) 3:

They have not been in the Crimea in the past year. They have been in Kiev