—Was his father very strict with him when he was at school？—Yes, he had never pr
题型：不详难度：来源：
—Was his father very strict with him when he was at school？
—Yes, he had never praised him _______ he became one of the top students in his grade. | A．after | B．unless | | C．until | D．when |
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答案
| C |
解析
| never 与until形成搭配。句意：他成为年级中最好的学生时，他父亲表扬了他。从He had never praised him 可以看出父亲表扬过他是事实，所以B项unless（强调条件关系）不合题意。这样说是合情合理的：Yes, he would never praise him unless he could become one of the top students in his grade. |
举一反三
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Don’t be afraid of asking for help ________ it is needed | A．unless | B．since | | C．although | D．when |
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