41.-- Have you ever been to Shanghai,Mary?

41.-- Have you ever been to Shanghai,Mary?
-- Yes.I _______ there for three days with my parents last month.
A.have gone B.have been C.went D.was
答：D 句中有明确的过去时间last month,不用完成时,排除AB.for 一段时间可以用于一般过去时,表状态的动词如was,were,例：For 60 years,Edison was the leading inventor of the world.
42.-- Please bring little Tom next time you come to Anhui.
--______,thank you.
A.I will B.I hope so C.That's right D.My pleasure
答：A.I will.表示“愿意,乐意”去.D.My pleasure一般用于帮了别人,别人表示感谢时的答语,意为能为你效劳是我的pleasure.
47.-- Why didn't you go to the cinema with us this afternoon?
-- I ______ at the station for my uncle from Beijing.
A.was waiting B.have waited C.am waiting D.will wait
答：A.问过去发生的事,回答当时在做某事,所以没去.
为什么下午没和我们一起去看电影?
因为我在车站等我北京来的叔父.