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 Great Walls of China _____ thousands of years ago.

A. is built

B. was built

C. is building

D. was building

Đáp án
B. was built

Câu hỏi thuộc Bài tập:

Ôn thi vào lớp 10 _ Đề số 21 (tập 2)