Bộ 20 đề ôn thi vào Chuyên Anh năm 2023 có đáp án (Đề 1)

Doctors advise people who are deficient vitamin C to eat more fruit and vegetables.

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Doctors advise people who are deficient __________ vitamin C to eat more fruit and vegetables.

from

of

in

for

Giải thích

Chọn C