His grandfather made him __________ hard when he was small

His grandfather made him __________ hard when he was small

A. study B. to study C. studying D. studied
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Đáp án: A
Giải thích: cấu trúc: “make sb V”: bắt ai làm gì
Dịch: Bố mẹ bắt anh ấy học hành vất vả hồi nhỏ