Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions. Originated (A) in Ethiopia, coffee was drunk (B) in the Arab world before (C) it came to Europe in the 17^th century.(D)

Kiến thức cần nhớ

Cách rút gọn mệnh đề khi hai vế câu có cùng chủ ngữ: Bỏ đi chủ ngữ của mệnh đề trạng ngữ, đồng thời chuyển động từ thành V- ing (dạng chủ động) hoặc (Being) + PP_II (dạng bị động)

Ex: - When he went home, he realized he had left his cell phone at the office.

→ Going home, he realized he had left his cell phone at the office.

- When he was attacked by a big dog, he ran away.

→ Attacked by a big dog, he he ran away.