Jason and Andy are twins． They share a lot of things， including room， food and toys．

    One Saturday， Jason and Andy went out （1）　　（play） with a toy car． Both of them wanted to be the owner of the car， so they shouted at each other． （2）　　（They） mother heard the boys arguing． She came out and told them to take turns to play with the toy car， but the twins wouldn't．

    A few days later， Mother brought （3）　　pet home． "Can't we each have our own pet dog？" asked the boys． They were （4）　　（tire） of sharing everything．

    "No! The dog must （5）　　（share）．" Mother said． "You will have to feed the dog and make sure it does not get into anything wrong．"

    Several days later， the dog got into mother's room （6）　　（secret） and made a mess there． Jason saw the dog playing with mother's clothes． He quickly went to find Andy and told him （7）　　the dog had done．

    "Oh， no! It's our duty to clean up the mess!" （8）　　（cry） Andy． They boys picked up the clothes and put them away rapidly．

    "Just think， Jason，" said Andy， "what a big mess two （9）　　（dog） would have made!" "I agree （10）　　you，" laughed Jason， "Maybe sharing isn't so bad!"