He complained to the bookseller that there were several pages ______ in the book.
A、losingB
暂无解析
In1900,theenergyderivedfromburningpetroleumwasonlyfourpercent______ofcoal.
Ifyou’resittingaroundalonelycampfireatnight,thehowlofawolfcansoundpretty______.
Wehavetowaitforthebus,______?
______thepopularityofrobotsinJapan,thecountry’srobot-productiongrowthisslowingdown.
OneoftheresponsibilitiesoftheCoastGuardistomakesurethatallships______followtrafficrulesinbusyharbors.
