1.Great changes______ in my hometown these years.A.happened B.has happened C.have happened D.are happened 2.My car _____ on the way to work yesterday.What a pity!A.is broken done B.was broken down C.broke done D.broke down 3.You'd better finish it this afternoon,_____?A.are you B.aren't you C.had you D.hadn't you 4.An excellent way to help memory is to ____information _____pictures.A.get； to B.collect； of C.link； with D.put up； on 5.The traffic accident which happened here yesterday (hurt) three people (括号中的单词的意思是下列选项中的哪个) A.injured B.hit C.hide D.jailed 6.When I said some people were silly,I wasn't ______ to you.(refer) 麻烦高手写一些原因 在下感激不尽!