HE WENT BACK TO WORK IN HIS COUNTRY AFTER HE HIS COURSE ON ADVANCED EN...

Câu 41: He went back to work in his country after he his course on Advanced Engineering in London. A. has finished B. was finishing C. finishes D. had finishedGiải thích: Hành động sau liên t ừ “after” để ở quá khứ hoàn thành vì hành động này xảy ra sau hành động“He went back to work in his country” trong quá kh ứ.