Câu hỏi: Mark the letter A, B, C or D to indicate the correct answer to each of the following questions.
She ______ gymnastics since she was 5 years old.
A. has been doing
B. does
C. did
D. have done
She ______ gymnastics since she was 5 years old.
A. has been doing
B. does
C. did
D. have done
Since + Clause (qkđ) là dấu hiệu của hiện tại hoàn thành (tiếp diễn)
Chủ ngữ là "she" => loại D
Chủ ngữ là "she" => loại D
Đáp án A.