In1985,_______becamethefirstinternationalhotelcompanytoopenahotelinChinabearingitsownname.
is,are,has,have,havingTheaverageBritishfamily,which________smallerandricherthan50yearsago,________3.6members.
Somelinguiststhoughtthatalllanguages______andwereruledbyacommongrammar.