The first draft resolution __________ yesterday; it __________ long be

The first draft resolution __________ yesterday; it __________ long before the beginning of the meeting.

• A. has not been discussed - had been withdrawn
• B. was not discussed - has been withdrawn
• C. was not discussed - had been withdrawn
• D. had not been discussed - was withdrawn

yesterday => quá khứ đơn + before => dùng quá khứ hoàn thành

Bản dự thảo => S là vật, không thể tự thảo luận được => câu bị động