SMITH _______ ABOUT FIVE MINUTES BEFORE I _______ HIM YESTERDAY

23. - 3 DE KIEM TRA HOC KY II MON ANH LOP 12 VA DAP AN THAMKHAO
Tiếng Anh 3 DE KIEM TRA HOC KY II MON ANH LOP 12 VA DAP AN THAMKHAO

23. Mr. Smith _______ about five minutes before I _______ him yesterday.

A. left / was calling B. was leaving / had called C. had left / called D. had left / had called