He passed the exam because he’s intelligent13/15He passed the exam because he’s intelligent.He’s intelligent, but he passed the exam.He’s intelligent, and he passed the exam.He’s intelligent, for he passed the exam.He’s intelligent, so he passed the exam.Giải thíchĐáp án D Giải thích: so: vì vậy Dịch: Anh ấy thông minh, vì vậy anh ấy đỗ kì thi.