Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions from 29 to 31.They saved enough money. Then, t

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Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions from 29 to 31.

They saved enough money. Then, they bought a new house for their parents.

Before they saved enough money, they had bought a new house for their parents.

After they saved enough money, they bought a new house for their parents.

After they had saved enough money, they bought a new house for their parents.

By the time they had bought a new house for their parents, they saved enough money.

Giải thích

Đáp án đúng: C

Giải thích: After + quá khứ hoàn thành, quá khứ đơn.

Dịch: Họ đã tiết kiệm đủ tiền. Sau đó, họ mua một ngôi nhà mới cho cha mẹ của họ.

= Sau khi họ đã tiết kiệm đủ tiền, họ đã mua một ngôi nhà mới cho cha mẹ của họ.