3．M：Hello，who's that speaking？ W：（66）This is Mary speaking． M：Hi，Mary． W：Hi，Jim．You didn't come to school yesterday．（67）What's wrong？ M：I was hurt in a car accident． W：（68）I'm sorry to hear that．is it serious？ M：Nothing serious． W：Did you see a doctor？ M：Of course． W：（69）What did the doctor say？ M：The doctor asked me to stay in bed for one or two days． W：Take care of yourself．When are you going to school？ M：（70）Tomorrow．I'm afraid I will miss more lessons． W：Don't worry．I will help you． M：Thank you． W：You're welcome．
