MODULE 9 - Đại từ nhân xưng, Đại từ sở hữu và Đại từ phản thân
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In the 19th century, it ________ two or three months to cross North America by covered wagon. The trip ________ very rough and often dangerous. A. took / was B. had taken / had been C. too

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In the 19th century, it ________ two or three months to cross North America by covered wagon. The trip ________ very rough and often dangerous.

took / was

had taken / had be

took / had been

had taken / was

Giải thích

Chọn đáp án A