WE ARRIVED AT THE STATION ____ THE TRAIN HAD LEFT. A. AFTER B. BEF...

15. - TÀI LIỆU BO DE TRAC NGHIEM ON THI VAO 10
TÀI LIỆU BO DE TRAC NGHIEM ON THI VAO 10
15. We arrived at the station ____ the train had left. A. after B. before C. since D. when