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5．She was working as a ________ (志愿者) after the Haiti earthquake. 6．The first ________ (古代的) Olympic Games were held in Greece in 776 BC. 7．We expect him to win more gold ________ (奖牌) in the next Olympic Games. 8．We all know that regular exercise and ________(身体的) activities are the path to health. 9．It is the teacher's ________ (责任) to help every student with their studies. 10．I have to ________ (承认) that it's more difficult than I thought it would be. 答案 1．motto 2.compete 3.replace 4.advertised 5．volunteer 6.ancient 7.medals 8.physical 9．responsibility 10.admit (2)used to 用于否定句时，其后的反意疑问句要在形式上前后一致。 (3)used to 用于 there be 句型中成为 There used to be... 意思是“过去曾经有……，过去曾存在……”。 【易混辨析】 used to/would (1)used to 表过去持续的状态或情况。其含义是现在的动作或习惯已不存在，强调现在、将来与过去的对比。 (2)would 表示过去的习惯、习性、倾向等，意思是“过去常常……”，表过去不大规则的行为，或主语的关心、感慨等主观因素较强；常与 often, sometimes, frequently, for hours 等词连用，但不与表状态的动词连用。 I used to smoke, but I gave up a couple of years ago. 我以前抽烟，但两年前就戒掉了。(现在不抽烟了) She would sit there for hours doing nothing at all. 她总是一连几个小时坐在那儿，什么也不做。(现在是否还有这个习惯，不清楚) 即境活用15 When he was there, he ________ go to that coffee shop at the corner after work every day. A．would | 
