Many people and organizations have been making every possible effort in order

Câu hỏi :

Many people and organizations have been making every possible effort in order to save ______ species.

A. endangered

B. dangerous

C. fearful

D. threatening

* Đáp án

A

* Hướng dẫn giải

Đáp án A

Endangered species: động vật bị đe dọa.

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