31.Whenheated,waterchangesinto_______.
32.Whatsheachievedinherresearchmight_______whatshehadbeenexpecting.
33.Itis_______toanyoneherethatthedepartmentchairmanhasrefusedtosupportthenewproject.
34.He_______hisfatherinappearancebutnotinheight.
35.BothO.J.SimpsonandJimBrownhavebeen______asthegreatestplayersinthehistoryoffootball.
36.Theairplanetookoffsoon.Itwaslikebeingonanoldtrain______fromsidetosideandgoingfasterandfaster.
37.Thisisapoemabout_______lifeintheAmericanWest.
39.Whattheyproducedhasnoany_______value.Butitisveryusefultotheirresearch.
40.WhentalkingaboutChineseculture,peopleoften_______itsoriginwiththeYellowRiver.