【题目】Not until he retired from teaching three years ago _______having a holiday abroad .
A. he had considered B. had he considered
C. he considered D. did he consider
在线课程【答案】D
【解析】
试题分析:句意：直到他三年前从教育退休，他才考虑去国外度假。not until结构位于句首时，主句使用部分倒装语序，排除A、C选项，根据three years ago判断句子用一般过去时，答案选D。