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

The race will begin _______.

A. once every runner had been ready

B. as every runner is ready

C. before every runner will be ready

D. till every runner was ready

Đáp án
B. as every runner is ready

Câu hỏi thuộc Bài tập:

ĐỀ SỐ 17 - VŨ MAI PHƯƠNG