THEY ___________THE DOOR. NO ONE CAN GET IN NOW. A. HAVE LOCKED B....

51. - TRAC NGHIEM PHAN THI TRONG TIENG ANH TONG HOP WITH KEYS TRAC NGHIEM TENSES TONG HOP
TRAC NGHIEM PHAN THI TRONG TIENG ANH TONG HOP WITH KEYS TRAC NGHIEM TENSES TONG HOP
51. They ___________the door. No one can get in now. A. Have locked B. had locked C. locked D. lock