Sử dụng which/who/whom/whose
1. A woman answered the phone. She told me you was busy
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2. The bus is always crowded. I take it to school every morning
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3. They are singing a song. I don't know the song
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4. A man spoke to me. He was very helpful
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5. A midwife is a woman. She assists other women in childbirth
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Sinh Học lớp 12
