PRESENTE PERFECT vs PAST SIMPLE

I BROKE A LEG WHEN I WAS YOUNG

I HAVE BROKEN A LEG WHEN I WAS YOUNG

THEY WENT TO LONDON

THEY HAVE GONE TO LONDON

DID YOU RUN THIS MORNING?

HAVE YOU RUN THIS MORNING?

HAVE YOU FINISHED YOUR WORK ?

DID YOU FINISH YOUR WORK ?

SHE ARRIVED AT 9 A.M.

SHE HAS ARRIVED AT 9 A.M.

HE NEVER TALKED TO HER

HE HAS NEVER TALKED TO HER

LAST YEAR, I WAS IN JAPAN

LAST YEAR, I HAVE BEEN IN JAPAN

HAVE YOU SEEN MY PHONE?

DID YOU SEE MY PHONE?

SHE HAS DONE A LOT FOR OUR COUNTRY

SHE DID A LOT FOR OUR COUNTRY

THIS MORNING, I ATE SOME CEREALS

THIS MORNING, I HAVE EATEN SOME CEREALS

NOVEMBER WAS A RAINY MONTH

NOVEMBER HAS BEEN A RAINY MONTH