【正文】
_________(join) a Party member for three years. will be bought joined has been What has happened? Look! The house ____________(burn). He_______ (be) to Beijing three times. He___________ (e) to help us as soon as he is free. I _____________( not see) him for a long time. I ________(finish) my work two hours ago. is burning has been will e haven’t seen finished Part V: Work in pairs (Activity 7) Part Ⅵ : Homework exercise: 4. 13 P112113 a summary of the activity 3