30 đề thi THPT Quốc gia môn Tiếng Anh cực hay, có đáp án (Đề 14)

Mr. Hung ____________ in the army from 1970 to 1980. has served

22/50

Mr. Hung ____________ in the army from 1970 to 1980.

has served

had been serving

had served

served

Giải thích

Chọn D