1,tom (don`t / doesn`t) ,swim. 2.they (don`t / doesn`t) skate. 3.his mother (skate /skates) well. 4.your mother (don`t /doesn`t) skate. 5,her sister (swim / swims) well. 6.your brother (have / has) a dog. 7,my aunt (like / likes) to ski. 8.his uncle (don`t / doesn`t) like to ski. 9,my sisters (have / has) the cats. 10,his brothhers (like / likes) to swim.