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Câu hỏi: Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions from 5 to 18.
After he _________the house, he wrote a letter.
A. cleans
B. had cleaned
C. has cleaned
D. was cleaning
After he _________the house, he wrote a letter.
A. cleans
B. had cleaned
C. has cleaned
D. was cleaning
Kiến thức: QKHT
Giải thích: After MD QKHT, MD QKT
Tạm dịch: Sau khi anh ấy lau nhà, anh ấy viết một lá thư
Giải thích: After MD QKHT, MD QKT
Tạm dịch: Sau khi anh ấy lau nhà, anh ấy viết một lá thư
Đáp án B.