Homing pigeon is useful as a ______ carrier because when taken from home, it will return atthe first opportunity.
A、meaningC
暂无解析
Inordertobuyanewcar,youshouldatleast______onehundreddollarsaweek.
Notallbirdscanfly,______doallbirdsbuildnests.
Thosewhochangemobilephonestoofrequentlywillhavetopayforbeing______.
In1900,theenergyderivedfromburningpetroleumwasonlyfourpercent______ofcoal.
Onarrivinghome,theboytoldhisparentsaboutallthe______whichoccurredinhisdormitory.
