用适当的介词填空
1.Wehaveconcernsaboutwhetherthegovermentwillbeabletoprovidepoorerfamilies___suitablesocialservices.
2.Thetestshowstheeffectsofzerogravityonbodies____space.
3.Stevewaswell-known______hisworkwithdisabledstudentsatamiddleschool.
4.EvenwhenJennywasdressedup,shedidn'tlook____afashionablelady.
5.Wewent____anarrowpassageandgotintoaroom,andtherewestopped.
6.Goodsweretransported____waterbecauseboatsweretheonlymeansoftransportationatthattime.
7.Thebookisanextremelyusefulguide____startingyourownbusiness.
8.Wearestilloptimistic____whatevertheresultmaybe.