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

We will organise a welcome event for foreign students ________.

A. when they will visit our school

B. as they visit our school

C. once they had visited our school

D. by the time they visited our school

ĐỀ SỐ 12 - VŨ MAI PHƯƠNG