Chọn đáp án đúng: When her husband was in the army, Mary __ to him twice a week. A) Was reading B) Wrote, C) Was written, D) Had written

23. When her husband was in the army, Mary ______ to him twice a week.A. was reading B. wrote C. was written D. had written24. I couldn't cut the grass because the lawn mower ______ a few days previously.A. broke down B. has been brokenC. had broken down D. breaks down25. I have never played badminton before. This is the first time I _____ to play.A. try B. tried C. have tried D. am trying26. Since _______, I have heard nothing from him.A. he had left B. he left C. he has left D. he was left27. After I _______ lunch, I looked for my bag.A. had B. had had C. have has D. have had28. By the end of next year, George _______ English for two years.A. will have learned B. will learnC. has learned D. would learn