I have learnt English since I was in grade 3. A. I learnt English when I was in grade 3. B. I started learning English when I was in grade 3. C. I have been in grade 3 since I learnt English

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I have learnt English since I was in grade 3.

I learnt English when I was in grade 3.

I started learning English when I was in grade 3.

I have been in grade 3 since I learnt English.

Learning English was fun in grade 3.

Giải thích

Đáp án: B

Giải thích: have/has Vp2 (for + khoảng thời gian/since + mốc thời gian) = started Ving/to V when.../ago

Dịch: Tôi bắt đầu học tiếng Anh khi tôi học lớp 3.