Tổng hợp đề thi thử tiếng anh thpt quốc gia (Đề số 26)

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

22/50

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

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

has served

had been serving

had served

served

Giải thích

Chọn D