DO YOU KNOW THE DATE ______ WE HAVE TO HAND IN THE ESSAY

36. - File thứ 4: de_kiem_tra_lop_11-_sach_cu-_u8-9-10_311201817
File thứ 4: de_kiem_tra_lop_11-_sach_cu-_u8-9-10_311201817
36. Do you know the date ______ we have to hand in the essay? A. which B. in which C. on that D. when