WHEN THEY ( COME) .TO THE STATION, THE TRAIN ALREADY ( LEAVE) ..…...

51. - DE THI OLYPMPIC DAI HOC
Tiếng Anh DE THI OLYPMPIC DAI HOC

51. When they ( come) .to the station, the train already ( leave) ..

…

…

A. came- had already left

B. came- left

C. came- has already left

D. came- was already leaving