问题

Not until he retired from teaching two years ago ______ having a holiday abroad.

A:he dad considered
B:had he considered
C:he considered
D:did he consider

正确答案是：

同类题型

I ____ a tour guide for 7 months.

When she woke up, she realized that the things she had dreamt about could not have happened

Which of the following underlined parts is different in pronunciation from others

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