SCHOOL EDUCATION SYSTEMI. HÃY CHỌN MỘT CÂU TRẢ LỜI ĐÚNG NHẤT

200. People thought at first that the Crown Prince had been attacked.

A. People were thought at first that the Crown Prince had been attacked.

B. It was thought at first that the Crown Prince had been attacked.

C. People are thought at first that the Crown Prince had been attacked.

D. It is thought at first that the Crown Prince had been attacked.