When your father (die)? I (not know) when he (die). A. did your father die – didn't know – died B. did your father die – don't know – died C. has your father died – didn't know – died D. has

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When your father (die)? I (not know) when he (die).

did your father die – didn't know – died

did your father die – don't know – died

has your father died – didn't know – died

has your father died – don’t know – died

Giải thích

Đáp án: B

Giải thích:

- Câu hỏi về sự việc đã xảy ra và hoàn tất trong quá khứ => quá khứ đơn

- Đang được hỏi ở hiện tại => hiện tại đơn

Dịch: Bố của bạn mất khi nào? Tôi không biết ông ấy mất khi nào.