Mark the letter A, B, C, or D on your answer sheet to indicate the cor

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

When her husband was in the army, Mary ______ to him twice a week. 

• A. A. was reading
• B. B. wrote
• C. C. was written
• D. D. had written

Chỉ thói quen trong quá khứ => qkđ
Dịch nghĩa: Khi chồng cô ấy ở trong quân đội, cô ấy viết thư cho anh ấy 2 lần một tuần.