Bộ 20 đề ôn thi vào Chuyên Anh năm 2023 có đáp án (Đề 18)

The doctor the cut on my knee and said it had completely healed up.

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The doctor _______the cut on my knee and said it had completely healed up.

examined

investigated

researched

looked into

Giải thích

Chọn A