词汇运用用括号内所给词的适当形式填空
81.Manypolarbearsdiebecauseof_________(lose)theirlivingareas.
82.Male________(wolf)willprotecttheirfamiliesifthereisdanger.
83.I’msoweakthatit’sdifficultformetoclimbtothe_________(12)floorwithoutalift.
84.Parentsshouldteachtheirchildrentolearntoprotect_________(they)whentheyareveryyoung.
85.Ourteacheroftentellsusthatit’s_______(correct)tohuntorfishinnaturereserves.
86.Badweathersometimescauses___________(nature)disasters.
87.Amyisananimalloversheoftentouchesthelovelycatas_______(gentle)asshecould.
88.Theradiosaysthatitwillbemuch_________(fog)tomorrow.
89.Thefarmers__________(destroy)theforeststobuildroadslastyearsothewolvesdidn’thavesuitablehomestolivein.
90.Childrenareusually________(happy)thantheirparentsduringtheSpringFestival.
91.Alargenumberoffarmersmovedtothe__________(south)citiestofindjobsinthe1980sandnowmostofthemarelivingabetterlife.
92.Thegovernmentencouragestheworkers__________(start)businessesontheirown.
93.Theheavyrainpreventedtheoldman____________(send)hisgrandsontohospital.
94.Giantpandas (notsurvive)ifwedon’tprotectthem.
95.Ifyou (notbe)carefulenoughintheexamyouwillnotgetagoodgrade.