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

Before he _____ his online store next month, he will test the website again.

A. opens

B. opened

C. open

D. has opened

Đáp án
A. opens

Câu hỏi thuộc Bài tập:

ENGLISH 9- 26/12/2025