问题

Not until he retired from teaching three yearsago _______having a holiday abroad .

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

正确答案是：

同类题型

________ Lucy’s pictures. They are nice.

Now many young people ________posting articles and photos onto the Wechat (微信) to share with their friends.

The science Festival is an occasion _____ modelplanes and model rockets are flown over the school grounds.

More than one worker ______dismissed

What makes a _________ person Or what leads to _________