【简答题】“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
【单选题】- Was his father very strict with him when he was at school? - Yes. He has never praised him _______ he became one of the top students in his grade.
【单选题】—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.