Bộ 20 đề ôn thi vào Chuyên Anh năm 2023 có đáp án (Đề 9)

companies will be able to tell at a glance (10) someone has made a claim within the last three years.

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companies will be able to tell at a glance (10) _____ someone has made a claim within the last three years.

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Giải thích

whether/ if