Ex2. 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

He has been teaching at the international school since he _____ his teaching certificate.

A. finishes

B. finished

C. has finished

D. had finished

Đáp án
B. finished

Câu hỏi thuộc Bài tập:

ENGLISH 9- 26/12/2025