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Câu hỏi: Mark the letter A, B, C or D to indicate the correct answer to each of the following questions.
Your sister used to visit you quite often, __________ ?
A. didn't she
B. doesn't she
C. wouldn't she
D. hadn't she
Your sister used to visit you quite often, __________ ?
A. didn't she
B. doesn't she
C. wouldn't she
D. hadn't she
Phần mệnh đề chính sử dụng cấu trúc "used to" thì trợ động từ trong phần láy dùng "did"
Đáp án A.