Bộ 20 đề ôn thi vào Chuyên Anh năm 2023 cực hay có lời giải (Đề 24)

They say that the response to (1) _________, which creates a chemical called adrenal in, helps the mind and body to act quickly (2) ___________ emergencies.

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They say that the response to (1) _________, which creates a chemical called adrenal in, helps the mind and body to act quickly (2) ___________ emergencies.

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Giải thích

2. in / during