英语翻译：thescienceofbioticcontrol
is,are,has,have,havingTheaverageBritishfamily,which________smallerandricherthan50yearsago,________3.6members.
MarkTwain’sparticularconcernaboutthelocalcharacterofaregioncameaboutas“localcolorism,”auniquevariationofAmericanliterary().
Nowmanymajoremployersarebeginningtodemand_______thecompletionofschool
ThedifferencesbetweensynonymsexistinthefollowingareasEXCEPT______.
