They will have finished preparing for the SEA Games ______. A. since the opening ceremony took place B. until the opening ceremony took place C. by the time the opening ceremony takes plac

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They will have finished preparing for the SEA Games ______.

since the opening ceremony took place

until the opening ceremony took place

by the time the opening ceremony takes place

after the opening ceremony had taken place

Giải thích

Đáp án C

Căn cứ vào mệnh đề chính They will have finished preparing for the SEA Games

S + WILL + HAVE + Vp2 + BY THE TIME + S + V(HT,HTHT)

Tạm dịch: Họ sẽ hoàn thành việc chuẩn bị cho SEA Games trước khi lễ khai mạc diễn ra.