They certainly knew that their task was hard__________ two previous attempts had failed.

Câu hỏi :

They certainly knew that their task was hard__________ two previous attempts had failed.

A. because

B. because of

C. in spite of

D. although

* Đáp án

A

* Hướng dẫn giải

Dịch: Họ chắc chắn biết rằng nhiệm vụ của họ là khó vì hai lần thử trước đã thất bại.

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