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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.
When my father ________ TV, my friend suddenly came to my house.
A. has watched
B. watches
C. watched
D. was watching
When my father ________ TV, my friend suddenly came to my house.
A. has watched
B. watches
C. watched
D. was watching
Hành động đang xảy ra liên tiếp trong quá khứ thì có hành động khác chen ngang
Đáp án D.