91.discover/find/find out/found/set up 发现/找到/搞清楚(弄明白)/成立/建立
92.set out/set off 出发
93.fill in/fill out 填写
94.no matter how difficult/however difficult 不论多么难
95.used to do…/be used to do…/be used to doing… 过去常常做/被用来做/习惯于做
96.it is no good/use doing… 做……没用
97.have sb do…/have sth done 使(让)某人做……/找人做……
98.make sb do…/be made to do… 迫使某人做……/被迫做……
99.be covered with snow 覆盖着积雪
100.get married to sb 和某人结婚
