HE HAS BEEN SELLING MOTORCYCLES...A. TEN YEARS AGO B.SINCE TEN YEAR...

2. - TONG HOP BAI TAP TRAC NGHIEM VE CAC THI TRONG TIENG ANH
TONG HOP BAI TAP TRAC NGHIEM VE CAC THI TRONG TIENG ANH

2.

He has been selling motorcycles...

A. ten years ago B.

since ten years C.

for ten years ago

D. for ten years