Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions Luckily, by the time we got there, the painting____________.

Câu hỏi :

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions

A. didn't sell

B. hadn't sold

C. wasn't sold

D. hadn't been sold

* Đáp án

D

* Hướng dẫn giải

Đáp án D

Cấu trúc: by the time + S + V (past)..., S + had + pp

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