My father locked all the doors. He went to work after that. A Before my father went to work, he had locked all the doors. B. After my father had gone to work, he locked all the doors. C. B

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My father locked all the doors. He went to work after that.

A Before my father went to work, he had locked all the doors.

After my father had gone to work, he locked all the doors.

Before my father locked all the doors, he went to work.

Before my father had gone to work, he locked all the doors.

Giải thích

Đáp án đúng: A

Thì quá khứ hoàn thành xảy ra trước thì quá khứ đơn

Dịch nghĩa: Bố tôi khóa tất cả các cửa lại. Ông ấy đi làm sau đó.

A. Trước khi bố tôi đi làm, ông ấy đã khóa tất cả các cửa.