A WINDOW ________ BY THE STUDENTS. A. WERE BROKEN B. HAVE BEEN...

30. A window ________ by the students.

A. were broken B. have been broken C. was broken D. has been broken

III. Chọn phương ỏn (A, B, C, hoặc D) ứng với từ/ cụm từ cú gạch dưới cần phải sửa để cỏc cõu

sau trở thành chớnh xỏc.