Question

【题目】—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

Answer 1

【答案】C

【解析】句意:——他上学时他父亲对他要求很严格吗？— 是的。他父亲直到他成为年级前几名才表扬他 never/not. . . until 直到才。