Câu hỏi :

The sea has become polluted because of _________

A. oil spills

B. factories wastes

C. smoke from factories

D. A and B are correct

* Đáp án

D

* Hướng dẫn giải

Dẫn chứng: But the sea has become so polluted from oil spills and factory wastes that the fish are dying.

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