By this time tomorrow, the president will have made the announcement. => By this time tomorrow
By this time tomorrow, the president will have made the announcement.
=> By this time tomorrow, the announcement ___________________________.
Đáp án: By this time tomorrow, the announcement will have been made by the president.
Giải thích: Câu bị động thì tương lai hoàn thành: S + will + have been + Vp2 + (by O)
Dịch: Vào giờ này ngày mai, tổng thống sẽ đưa ra thông báo.