一．单项选择（共15小题，每小题1分，满分15分。）
请阅读下面各小题，从题中所给的A、B、C、D四个选项中选出最佳选项，并在答题卷上将该项涂黑。
1. --How long _______?
--Sorry, I don’t know. But I know that Mr. Chen is going to _______ a nurse next month.
A. did they marry; marry to B. did they get marry; marry with
C. have they get married; marry D. have they been married; marry
