6、B.brotherC.cousin()23.—_______thatboy?—He'smyfriendJack.A.IsB.What'sC.Who's()24.—______ do you spell the word “pen”?—P-E-N.A. WhatB. HowC. Where()25.Wherearethebooks?________onthedesk.A.ItisB.TheyareC.Thereare()26.Mymotherisfun,______myfather________.A.and;isn’tB.but;isn’tC.but;doesn’t()27.