Đề thi giữa HK2 Tiếng Anh 12 năm 2020 – 2021 trường THPT Thị xã Quảng Trị

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• This river used to have the greatest _____ of freshwater fish in the country, but now very few species are found here.

• People should be told about the things that threaten the safety of wildlife ________ they can avoid doing them.

• The owners of (A) modern manufacturing plants had workers (B) doing heavy and (C) repetitive tasks (D) replacing by robots.