LAST YEAR, THEY ……….22 MILLION TV SETS.A-WERE SELLING B-HAD SOLD C-...

71- - BAI TAP TRAC NGHIEM VE THI TRONG TIENG ANH
BAI TAP TRAC NGHIEM VE THI TRONG TIENG ANH
71-Last year, they ……….22 million TV sets.A-were selling B-had sold C-has sold D-sold