His father was very strict with him and he had never praised him ___________he became one of the top...
2022-08-30 23:01:27 23次 福建省2019-2020学年中考模拟《逆袭诊断卷》英语试卷（含听力） 单选题 反馈错误 加入收藏 正确率 : 100%
题目内容：
His father was very strict with him and he had never praised him ___________he became one of the top students in his grade.
A.unless B.because C.since
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