Question

If you (save) some money you would have been able to go on holiday last year.

Answer 1

If you had saved some money you would have been able to go on holiday last year.

Если бы ты сэкономил некоторые деньги, то ты бы мог поехать отдыхать в прошлой году.

Это Third Conditional

Answer 2

The correct verb form for the sentence "If you (save) some money, you would have been able to go on holiday last year" is "had saved":

"If you had saved some money, you would have been able to go on holiday last year."