OneoftheresponsibilitiesoftheCoastGuardistomakesurethatallships______followtrafficrulesinbusyharbors.
B
暂无解析
Iwasshockedbythenumberofpeoplewhoseemedtohavenothingbettertodowiththeirtimethan______toknowfishbetter.
Mrs.Smithlockedboththefrontandthebackdoorsbeforeshewenttobed______thatsomeonemightstealintothehouseatnight.
Americanseat______vegetablesperpersontodayastheydidin1910.