HE RECOGNIZED HER FACE. HE WAS SURE THAT THEY ________ BEFORE.A.ME...

11. - AV11 KIEM TRA 45 PHUT LAN 4
AV11 KIEM TRA 45 PHUT LAN 4
11. He recognized her face. He was sure that they ________ before.A.met B.had met C.meet D.have meet