Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

Câu hỏi

Her academic performance has greatly improved since she her study ______ methods.

A. will change

B. changed

C. was changing

D. would change

Đáp án
B. changed

Câu hỏi thuộc Bài tập:

Ôn thi vào lớp 10 _ đề số 5 (tập 2)