单项选择题
When did you see her? What （） then?
A.was she doing B.did she do C.is she doing D.has she hone
单项选择题 When Jack arrived, he learned Mary （） for almost an hour.
单项选择题 （）what she would do, she didn't say anything.
单项选择题 Be quiet! They （） a meeting in the next room.
