My uncle worked as a volunteer in Tibet last year. He told me a lot of his unforgettable _________ while working there.

The opening ceremony of the 29th Beijing Olympic Games was __________ that everybody was greatly impressed_____ it

The National Stadium which looks very magnificent ____ 258,000 square metres in area. [ ]

_______ time this afternoon, I would teach you how to use the computer.[ ]

(2013·高考重庆卷)—It rained cats and dogs this morning.I’ m glad we took an umbrella.—Yeah，we would have got wet all over if we________