Not all birds can fly , ______ do all birds build nests.
B
暂无解析
Thehostsapologizedfor______thatsomeoftheirguestsmightbevegetarians.
Thosewhochangemobilephonestoofrequentlywillhavetopayforbeing______.
Mrs.Smithlockedboththefrontandthebackdoorsbeforeshewenttobed______thatsomeonemightstealintothehouseatnight.
Onarrivinghome,theboytoldhisparentsaboutallthe______whichoccurredinhisdormitory.