WHEN I ………. TO VISIT HIM, HE …………... TO WORK. A. CAME/GONE B. CAME...

19. - DE KIEM TRA ANH VAN 45 PHUT LOP 10
DE KIEM TRA ANH VAN 45 PHUT LOP 10

19. When I ………. to visit him, he …………... to work.

A. came/gone B. came/had gone C. had come/went D. had come/ had gone