Hetalkedalotaboutthingsandpersons________theyrememberedintheschool.
A、whichB
things 和 persons 是先行词 .当定语从句要修饰的先行词是既表示人 , 又表示物的名词时 , 其关系代词要用 that
Theothertimingsystembelongsinourinternalclocks，which，left________，wouldtiethebodytoa25-hourrhythm.
Thethieftookawaythewoman’swalletwithout________.
Well-arrangedsentencesareconsideredgrammaticalsentencesthatareformedfollowingasetofsyntacticrules.
Johnsonwas________unknownbeforerunningforthepresidency.
______movesonascaleofthenationallanguage,dialects,andindividualwaysofcommunication.
