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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.
She was cooking while I my homework.
A. was done
B. was doing
C. am doing
D. have done
She was cooking while I my homework.
A. was done
B. was doing
C. am doing
D. have done
Kiến thức: Sự phối hợp về thì của động từ
Thì qúa tiếp diễn, trong câu diến tã các hành động đang xáy ra song song tại một thời điểm trong quá khứ.
S+ was/ were+ V-ing while +S+ was/were+ V-ing
A. was done
B. was doing
C. am doing
D. have done
Thì qúa tiếp diễn, trong câu diến tã các hành động đang xáy ra song song tại một thời điểm trong quá khứ.
S+ was/ were+ V-ing while +S+ was/were+ V-ing
A. was done
B. was doing
C. am doing
D. have done
Đáp án B.