单项选择题
A.it must have rained B.it must rain C.it must be raining D.it must have been raining
（）that it was raining, he put on his raincoat.A.SeeB.To...
单项选择题（）that it was raining, he put on his raincoat.
A.See B.To see C.Saw D.Seeing
When did you see her? What （） then?A.was she doingB.did...
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
When Jack arrived, he learned Mary （） for almost an hou...
单项选择题When Jack arrived, he learned Mary （） for almost an hour.
A.had gone B.had set off C.had left D.had been away
