Tenses

English as a Second Language English Vocabulary, Grammar and Idioms
1

What [color=red]______ the greatest change in (or [color=red]of? ) your life in the last year?

Thanks

2

Hi,

I would suggest ‘has been’ because it refers to the period over one year up till now. ‘Change in’ is fine.

Alan

3

If it reads like this “What____the greatest change in you life last year?” should we use " was " ?

4

Yes.

(You have a typo: “you” instead of “your”.)