MARY HAS BEEN WORKING THERE SINCE SHE………….THE UNIVERSITY (HAS LEFT...

9/ - DE KIEM TRA HKII TIENG ANH 9
Lớp 9 Tiếng Anh DE KIEM TRA HKII TIENG ANH 9

9/ Mary has been working there since she………….the University (has left / leaves / is

leaving / left )