每天的这个时候交通都很拥挤.There ---- ---- ----at this time of a day

每天的这个时候交通都很拥挤.There ____ ____ ____at this time of a day(1)我邀请他来参加晚会I invited her ____ ____ to the party.(2)The doctor told me _____ (not make) the cat always _____(eat) the same food.(3)He spent more than half an hour _____(prepare) _____(go) on a trip.1.一直角三角形一条直角边长为9,另两边边长为两个连续整数,则这个三角形的周长是多少?