81.occur

　　82.sth occurred to sb

　　83.take place

　　84.if/whether/weather

　　85.break out

　　86.break down

　　87.instead of

　　88.look up to/look down on/upon

　　89.be half/twice/three times/four times/five times as large as…

　　90.much higher than…/much more expensive than…

　　91.find/find out/found/set up

　　92.set out/set off

　　93.fill in/fill out

　　94.no matter how difficult/however difficult

　　95.used to do…/be used to do…/be used to doing…

　　96.it is no good/use doing…

　　97.have sb do…/have sth done

　　98.make sb do…/be made to do…

　　99.be covered with snow

　　100.get married to sb