SHE CANNOT BE AT WORK. NO ONE IN THE OFFICE ...HER SINCE THE LUNC...

7/ - HE THONG DE KIEM TRA TRAC NGHIEM 15''''ANH 10 CB 2
HE THONG DE KIEM TRA TRAC NGHIEM 15''''ANH 10 CB 2

7/ She cannot be at work. No one in the office ...her since the lunch time.

a

has seen

b

saw

c

would see

d

had seen