Bộ 10 đề ôn thi học sinh giỏi Tiếng anh lớp 9 có đáp án (Đề 4)

This is________ the most difficult job I’ve ever had to do. A. by far B. by chance C. by heart D. by myself

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This is________ the most difficult job I’ve ever had to do.

by far

by chance

by heart

by myself

Giải thích

Chọn đáp án A