Question

【题目】____he had failed many times, he didn’t give up and succeeded in the end.

A. Unless B. Although C. If D. As

Answer 1

【答案】B

【解析】句意：虽然他失败了很多次，但是他没有放弃，并且最后取得了成功。 unless"除非"；although"虽然"；if"如果"；as"因为"。结合句意可知选B。