Bộ 5 đề thi giữa kì 2 Tiếng Anh 11 Global Success có đáp án - Đề 4

One of the first sites that _______ to UNESCO's World Heritage List was Yellowstone National Park in the United States. A. adding B. to add C. was added D. added38. At

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One of the first sites that _______ to UNESCO's World Heritage List was Yellowstone National Park in the United States. 

adding

to add C

. was added 

added

Giải thích

Choose C