Bộ 5 đề thi cuối kì 1 Tiếng Anh 9 Friends Plus có đáp án - Đề 2

The key is balance—while occasional stress can sharpen us, chronic stress can take a (28) ______ on our immune system, making us feel flat and (29) ______ out.

29/40

The key is balance—while occasional stress can sharpen us, chronic stress can take a (28) ______ on our immune system, making us feel flat and (29) ______ out.

made

turned

worked

worn

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