The pioneers raised corn (A) as their chief crop (B) because they kept well (C) in any season and could be used in many ways (D) 

Câu hỏi :

The pioneers raised corn (A) as their chief crop (B) because they kept well (C) in any season and could be used in many ways (D) 

A raised corn 

B their chief crop

C they kept well

D in many ways

* Đáp án

C

* Hướng dẫn giải

Phương pháp giải:

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