It is a Saturday morning．You have your breakfast，walk the dog，and then go to football practice on time．A few hours later,you return home,only to find that the dog has made your bedroom untidy．Your clothes are on the floor．
Before you get angry,you should stop and think．Your dog wasn't misbehaving(捣蛋)just for the fun of it．And he wasn't punishing(惩罚)you for leaving．It's called separation anxiety(分离焦虑)．
Think of it this way：Dogs can't ask where you're going or when you'll back All they know is that they want to be with you．Since you're not there,they need to find you.Dogs may Suddenly develop separation anxiety．But with practice and patience(耐心)，you can teach your dog to be Comfortable being left alone.
Put on your jacket，and then sit down．After a while，walk out the door for 1 minute，then 2 and so on．Little by little your dog will learn that when you leave，you will return．
◎Teach your dog a word or that you use every time you leave，which tells your dog you'll be back
◎Before you leave，give your dog a toy．It will keep him busy while you're away．
根据材料内容从方框中选择恰当的句子填入文中空缺处，使材料内容完整、正确，其中有一个句子是多余的。
| A．You can also try me following ways． B．Your favourite sports shoes are in poor condition. C．You'd better find someone to look after your dog． D．They can't call you on the phone． E．Open and close the door,and then sit down． F．Some dogs just feel nervous when left alone． |
