答案
12. One Sunday afternoon a friend of me called on me. 1.______mine_________
She stays for a long time. She seemed unable to stop talking. 2._____stayed__________
Soon it was time of me to take my dog, Blackie, 3._____for______________
for his walk but the visitor still stayed. Blackie 4.______正确__________
became very worried by his walk in the park. He 5._____about____________
