If you’re sitting around a lonely campfire at night, the howl of a wolf can sound pretty______.
A、fearfulA
暂无解析
There______nothingmorefordiscussion,themeetingendedearlierthanexpected.
Thehostsapologizedfor______thatsomeoftheirguestsmightbevegetarians.
Homingpigeonisusefulasa______carrierbecausewhentakenfromhome,itwillreturnatthefirstopportunity.
In1900,theenergyderivedfromburningpetroleumwasonlyfourpercent______ofcoal.
Notallbirdscanfly,______doallbirdsbuildnests.