3B U10 - Referring to time in the past

ROCK'N'ROLL BECAME POPULAR _____ THE 1950'S

I HAVEN'T BEEN IN A CIRCUS________I WAS 10 YEARS OLD.

IT WAS ____________THE CHRISTMAS HOLIDAY WHEN I BOUGHT A NEW CAR.

I JUST LISTENED TO ONE OF HIS SONGS FEW DAYS _________

Do you realize that the Beatles’s music has influenced other musicians _________ over 50 years?

FRANK AND CHARLES HAVE BEEN PLAYING BASEBALL_______THEY WERE KIDS.

I'VE BEEN STUDYING ENGLISH __________FIVE YEARS.

JAZZ BECAME POPULAR_____THE 1920'S.

VIETNAM WAS SEPARATED INTO TWO PARTS________ABOUT 20 YEARS.

EAST AND WEST GERMANY HAVE BEEN UNITED_______1990.

SHE USED TO SING IN A BAND SIX YEARS__________.

THE UN HAS BEEN IN EXISTENCE _______ 1945

I GOT A PHONE CALL____________THE MORNING.

They performed together for 10 years – _____ 1960 _____ 1970.

THE FIRST LAPTOP WAS PRODUCED________1991.

It’s pretty amazing that people have listened to the Beatles ________ both the twentieth and the twenty-first centuries, isn’t it?